Home / 20,854.55-28,779.13-11,294.22

Finding the Fourth Proportional to 20,854.55, 28,779.13 and 11,294.22

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Solution

The fourth proportional to 20,854.55, 28,779.13 and 11,294.22 is: 15,585.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,854.55 : 28,779.13 = 11,294.22 : x
  2. Step 2: Convert to fraction form
    20,854.55/28,779.13 = 11,294.22/x
  3. Step 3: Cross multiply
    20,854.55x = 28,779.13 × 11,294.22
  4. Step 4: Simplify right side
    20,854.55x = 325,037,681.73
  5. Step 5: Solve for x
    x = 325,037,681.73/20,854.55
  6. Step 6: Final answer
    x = 15,585.94

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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.