Home / 15,329.55-21,146.12-9,654.53

Finding the Fourth Proportional to 15,329.55, 21,146.12 and 9,654.53

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Solution

The fourth proportional to 15,329.55, 21,146.12 and 9,654.53 is: 13,317.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,329.55 : 21,146.12 = 9,654.53 : x
  2. Step 2: Convert to fraction form
    15,329.55/21,146.12 = 9,654.53/x
  3. Step 3: Cross multiply
    15,329.55x = 21,146.12 × 9,654.53
  4. Step 4: Simplify right side
    15,329.55x = 204,155,854.52
  5. Step 5: Solve for x
    x = 204,155,854.52/15,329.55
  6. Step 6: Final answer
    x = 13,317.80

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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.