Home / 38,730.60-58,090.36-12,431.88

Finding the Fourth Proportional to 38,730.60, 58,090.36 and 12,431.88

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Solution

The fourth proportional to 38,730.60, 58,090.36 and 12,431.88 is: 18,646.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,730.60 : 58,090.36 = 12,431.88 : x
  2. Step 2: Convert to fraction form
    38,730.60/58,090.36 = 12,431.88/x
  3. Step 3: Cross multiply
    38,730.60x = 58,090.36 × 12,431.88
  4. Step 4: Simplify right side
    38,730.60x = 722,172,384.68
  5. Step 5: Solve for x
    x = 722,172,384.68/38,730.60
  6. Step 6: Final answer
    x = 18,646.04

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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.