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Finding the Fourth Proportional to 15,723.17, 21,701.05 and 9,013.29

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Solution

The fourth proportional to 15,723.17, 21,701.05 and 9,013.29 is: 12,440.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,723.17 : 21,701.05 = 9,013.29 : x
  2. Step 2: Convert to fraction form
    15,723.17/21,701.05 = 9,013.29/x
  3. Step 3: Cross multiply
    15,723.17x = 21,701.05 × 9,013.29
  4. Step 4: Simplify right side
    15,723.17x = 195,597,856.95
  5. Step 5: Solve for x
    x = 195,597,856.95/15,723.17
  6. Step 6: Final answer
    x = 12,440.10

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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.