Home / 14,520.71-20,031.20-9,487.88

Finding the Fourth Proportional to 14,520.71, 20,031.20 and 9,487.88

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Solution

The fourth proportional to 14,520.71, 20,031.20 and 9,487.88 is: 13,088.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,520.71 : 20,031.20 = 9,487.88 : x
  2. Step 2: Convert to fraction form
    14,520.71/20,031.20 = 9,487.88/x
  3. Step 3: Cross multiply
    14,520.71x = 20,031.20 × 9,487.88
  4. Step 4: Simplify right side
    14,520.71x = 190,053,474.26
  5. Step 5: Solve for x
    x = 190,053,474.26/14,520.71
  6. Step 6: Final answer
    x = 13,088.44

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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.