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Finding the Fourth Proportional to 15,565.80, 21,472.80 and 10,530.24

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Solution

The fourth proportional to 15,565.80, 21,472.80 and 10,530.24 is: 14,526.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,565.80 : 21,472.80 = 10,530.24 : x
  2. Step 2: Convert to fraction form
    15,565.80/21,472.80 = 10,530.24/x
  3. Step 3: Cross multiply
    15,565.80x = 21,472.80 × 10,530.24
  4. Step 4: Simplify right side
    15,565.80x = 226,113,737.47
  5. Step 5: Solve for x
    x = 226,113,737.47/15,565.80
  6. Step 6: Final answer
    x = 14,526.32

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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.