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Finding the Fourth Proportional to 13,710.60, 20,565.90 and 9,555.30

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Solution

The fourth proportional to 13,710.60, 20,565.90 and 9,555.30 is: 14,332.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,710.60 : 20,565.90 = 9,555.30 : x
  2. Step 2: Convert to fraction form
    13,710.60/20,565.90 = 9,555.30/x
  3. Step 3: Cross multiply
    13,710.60x = 20,565.90 × 9,555.30
  4. Step 4: Simplify right side
    13,710.60x = 196,513,344.27
  5. Step 5: Solve for x
    x = 196,513,344.27/13,710.60
  6. Step 6: Final answer
    x = 14,332.95

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.