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Finding the Fourth Proportional to 18,458.29, 27,691.95 and 5,310.58

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Solution

The fourth proportional to 18,458.29, 27,691.95 and 5,310.58 is: 7,967.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,458.29 : 27,691.95 = 5,310.58 : x
  2. Step 2: Convert to fraction form
    18,458.29/27,691.95 = 5,310.58/x
  3. Step 3: Cross multiply
    18,458.29x = 27,691.95 × 5,310.58
  4. Step 4: Simplify right side
    18,458.29x = 147,060,315.83
  5. Step 5: Solve for x
    x = 147,060,315.83/18,458.29
  6. Step 6: Final answer
    x = 7,967.17

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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.