Home / 21,032,456.10-31,548,684.15-20,040,432.90

Finding the Fourth Proportional to 21,032,456.10, 31,548,684.15 and 20,040,432.90

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Solution

The fourth proportional to 21,032,456.10, 31,548,684.15 and 20,040,432.90 is: 30,060,649.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,032,456.10 : 31,548,684.15 = 20,040,432.90 : x
  2. Step 2: Convert to fraction form
    21,032,456.10/31,548,684.15 = 20,040,432.90/x
  3. Step 3: Cross multiply
    21,032,456.10x = 31,548,684.15 × 20,040,432.90
  4. Step 4: Simplify right side
    21,032,456.10x = 632,249,287,791,368.50
  5. Step 5: Solve for x
    x = 632,249,287,791,368.50/21,032,456.10
  6. Step 6: Final answer
    x = 30,060,649.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.