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Finding the Fourth Proportional to 38,693, 58,036.44 and 12,390.68

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Solution

The fourth proportional to 38,693, 58,036.44 and 12,390.68 is: 18,585.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,693 : 58,036.44 = 12,390.68 : x
  2. Step 2: Convert to fraction form
    38,693/58,036.44 = 12,390.68/x
  3. Step 3: Cross multiply
    38,693x = 58,036.44 × 12,390.68
  4. Step 4: Simplify right side
    38,693x = 719,110,956.38
  5. Step 5: Solve for x
    x = 719,110,956.38/38,693
  6. Step 6: Final answer
    x = 18,585.04

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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.