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Finding the Fourth Proportional to 18,477.76, 27,718.17 and 7,948.04

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Solution

The fourth proportional to 18,477.76, 27,718.17 and 7,948.04 is: 11,922.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,477.76 : 27,718.17 = 7,948.04 : x
  2. Step 2: Convert to fraction form
    18,477.76/27,718.17 = 7,948.04/x
  3. Step 3: Cross multiply
    18,477.76x = 27,718.17 × 7,948.04
  4. Step 4: Simplify right side
    18,477.76x = 220,305,061.53
  5. Step 5: Solve for x
    x = 220,305,061.53/18,477.76
  6. Step 6: Final answer
    x = 11,922.72

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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.