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Finding the Fourth Proportional to 15,593.96, 21,519.60 and 8,520.50

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Solution

The fourth proportional to 15,593.96, 21,519.60 and 8,520.50 is: 11,758.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,593.96 : 21,519.60 = 8,520.50 : x
  2. Step 2: Convert to fraction form
    15,593.96/21,519.60 = 8,520.50/x
  3. Step 3: Cross multiply
    15,593.96x = 21,519.60 × 8,520.50
  4. Step 4: Simplify right side
    15,593.96x = 183,357,751.80
  5. Step 5: Solve for x
    x = 183,357,751.80/15,593.96
  6. Step 6: Final answer
    x = 11,758.25

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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.