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Finding the Fourth Proportional to 38,808.70, 58,218.45 and 15,429.70

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Solution

The fourth proportional to 38,808.70, 58,218.45 and 15,429.70 is: 23,146.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,808.70 : 58,218.45 = 15,429.70 : x
  2. Step 2: Convert to fraction form
    38,808.70/58,218.45 = 15,429.70/x
  3. Step 3: Cross multiply
    38,808.70x = 58,218.45 × 15,429.70
  4. Step 4: Simplify right side
    38,808.70x = 898,293,217.97
  5. Step 5: Solve for x
    x = 898,293,217.97/38,808.70
  6. Step 6: Final answer
    x = 23,146.70

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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.