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Finding the Fourth Proportional to 38,960, 58,410.84 and 12,649.04

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Solution

The fourth proportional to 38,960, 58,410.84 and 12,649.04 is: 18,964.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,960 : 58,410.84 = 12,649.04 : x
  2. Step 2: Convert to fraction form
    38,960/58,410.84 = 12,649.04/x
  3. Step 3: Cross multiply
    38,960x = 58,410.84 × 12,649.04
  4. Step 4: Simplify right side
    38,960x = 738,841,051.59
  5. Step 5: Solve for x
    x = 738,841,051.59/38,960
  6. Step 6: Final answer
    x = 18,964.09

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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.