Home / 20,725.16-28,605.14-13,652.20

Finding the Fourth Proportional to 20,725.16, 28,605.14 and 13,652.20

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Solution

The fourth proportional to 20,725.16, 28,605.14 and 13,652.20 is: 18,842.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.16 : 28,605.14 = 13,652.20 : x
  2. Step 2: Convert to fraction form
    20,725.16/28,605.14 = 13,652.20/x
  3. Step 3: Cross multiply
    20,725.16x = 28,605.14 × 13,652.20
  4. Step 4: Simplify right side
    20,725.16x = 390,523,092.31
  5. Step 5: Solve for x
    x = 390,523,092.31/20,725.16
  6. Step 6: Final answer
    x = 18,842.95

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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.