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Finding the Fourth Proportional to 15,713.20, 23,569.80 and 15,108.40

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Solution

The fourth proportional to 15,713.20, 23,569.80 and 15,108.40 is: 22,662.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,713.20 : 23,569.80 = 15,108.40 : x
  2. Step 2: Convert to fraction form
    15,713.20/23,569.80 = 15,108.40/x
  3. Step 3: Cross multiply
    15,713.20x = 23,569.80 × 15,108.40
  4. Step 4: Simplify right side
    15,713.20x = 356,101,966.32
  5. Step 5: Solve for x
    x = 356,101,966.32/15,713.20
  6. Step 6: Final answer
    x = 22,662.60

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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.