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Finding the Fourth Proportional to 15,517.20, 23,250.20 and 13,213.20

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Solution

The fourth proportional to 15,517.20, 23,250.20 and 13,213.20 is: 19,798.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,517.20 : 23,250.20 = 13,213.20 : x
  2. Step 2: Convert to fraction form
    15,517.20/23,250.20 = 13,213.20/x
  3. Step 3: Cross multiply
    15,517.20x = 23,250.20 × 13,213.20
  4. Step 4: Simplify right side
    15,517.20x = 307,209,542.64
  5. Step 5: Solve for x
    x = 307,209,542.64/15,517.20
  6. Step 6: Final answer
    x = 19,798.00

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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.