Home / 28,567,870.20-42,851,805.30-21,293,033.40

Finding the Fourth Proportional to 28,567,870.20, 42,851,805.30 and 21,293,033.40

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Solution

The fourth proportional to 28,567,870.20, 42,851,805.30 and 21,293,033.40 is: 31,939,550.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,567,870.20 : 42,851,805.30 = 21,293,033.40 : x
  2. Step 2: Convert to fraction form
    28,567,870.20/42,851,805.30 = 21,293,033.40/x
  3. Step 3: Cross multiply
    28,567,870.20x = 42,851,805.30 × 21,293,033.40
  4. Step 4: Simplify right side
    28,567,870.20x = 912,444,921,503,196.88
  5. Step 5: Solve for x
    x = 912,444,921,503,196.88/28,567,870.20
  6. Step 6: Final answer
    x = 31,939,550.10

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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.