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Finding the Fourth Proportional to 18,630.32, 27,948.93 and 6,151.21

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Solution

The fourth proportional to 18,630.32, 27,948.93 and 6,151.21 is: 9,227.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.32 : 27,948.93 = 6,151.21 : x
  2. Step 2: Convert to fraction form
    18,630.32/27,948.93 = 6,151.21/x
  3. Step 3: Cross multiply
    18,630.32x = 27,948.93 × 6,151.21
  4. Step 4: Simplify right side
    18,630.32x = 171,919,737.71
  5. Step 5: Solve for x
    x = 171,919,737.71/18,630.32
  6. Step 6: Final answer
    x = 9,227.95

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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.