Home / 30,646.11-42,306.11-20,454.01

Finding the Fourth Proportional to 30,646.11, 42,306.11 and 20,454.01

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Solution

The fourth proportional to 30,646.11, 42,306.11 and 20,454.01 is: 28,236.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,646.11 : 42,306.11 = 20,454.01 : x
  2. Step 2: Convert to fraction form
    30,646.11/42,306.11 = 20,454.01/x
  3. Step 3: Cross multiply
    30,646.11x = 42,306.11 × 20,454.01
  4. Step 4: Simplify right side
    30,646.11x = 865,329,597.00
  5. Step 5: Solve for x
    x = 865,329,597.00/30,646.11
  6. Step 6: Final answer
    x = 28,236.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.