Home / 20,854.47-28,779.02-11,294.13

Finding the Fourth Proportional to 20,854.47, 28,779.02 and 11,294.13

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Solution

The fourth proportional to 20,854.47, 28,779.02 and 11,294.13 is: 15,585.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,854.47 : 28,779.02 = 11,294.13 : x
  2. Step 2: Convert to fraction form
    20,854.47/28,779.02 = 11,294.13/x
  3. Step 3: Cross multiply
    20,854.47x = 28,779.02 × 11,294.13
  4. Step 4: Simplify right side
    20,854.47x = 325,034,118.72
  5. Step 5: Solve for x
    x = 325,034,118.72/20,854.47
  6. Step 6: Final answer
    x = 15,585.83

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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.