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Finding the Fourth Proportional to 15,593.88, 21,519.63 and 8,520.42

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Solution

The fourth proportional to 15,593.88, 21,519.63 and 8,520.42 is: 11,758.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,593.88 : 21,519.63 = 8,520.42 : x
  2. Step 2: Convert to fraction form
    15,593.88/21,519.63 = 8,520.42/x
  3. Step 3: Cross multiply
    15,593.88x = 21,519.63 × 8,520.42
  4. Step 4: Simplify right side
    15,593.88x = 183,356,285.84
  5. Step 5: Solve for x
    x = 183,356,285.84/15,593.88
  6. Step 6: Final answer
    x = 11,758.22

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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.