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Finding the Fourth Proportional to 15,593.60, 21,518.91 and 8,519.87

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Solution

The fourth proportional to 15,593.60, 21,518.91 and 8,519.87 is: 11,757.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,593.60 : 21,518.91 = 8,519.87 : x
  2. Step 2: Convert to fraction form
    15,593.60/21,518.91 = 8,519.87/x
  3. Step 3: Cross multiply
    15,593.60x = 21,518.91 × 8,519.87
  4. Step 4: Simplify right side
    15,593.60x = 183,338,208.15
  5. Step 5: Solve for x
    x = 183,338,208.15/15,593.60
  6. Step 6: Final answer
    x = 11,757.28

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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.