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Finding the Fourth Proportional to 13,532.61, 18,655.14 and 8,752.20

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Solution

The fourth proportional to 13,532.61, 18,655.14 and 8,752.20 is: 12,065.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,532.61 : 18,655.14 = 8,752.20 : x
  2. Step 2: Convert to fraction form
    13,532.61/18,655.14 = 8,752.20/x
  3. Step 3: Cross multiply
    13,532.61x = 18,655.14 × 8,752.20
  4. Step 4: Simplify right side
    13,532.61x = 163,273,516.31
  5. Step 5: Solve for x
    x = 163,273,516.31/13,532.61
  6. Step 6: Final answer
    x = 12,065.19

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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.