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Finding the Fourth Proportional to 18,154.71, 27,218.25 and 9,384.03

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Solution

The fourth proportional to 18,154.71, 27,218.25 and 9,384.03 is: 14,068.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,154.71 : 27,218.25 = 9,384.03 : x
  2. Step 2: Convert to fraction form
    18,154.71/27,218.25 = 9,384.03/x
  3. Step 3: Cross multiply
    18,154.71x = 27,218.25 × 9,384.03
  4. Step 4: Simplify right side
    18,154.71x = 255,416,874.55
  5. Step 5: Solve for x
    x = 255,416,874.55/18,154.71
  6. Step 6: Final answer
    x = 14,068.90

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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.