Home / 38,681.87-58,023.31-12,386.61

Finding the Fourth Proportional to 38,681.87, 58,023.31 and 12,386.61

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Solution

The fourth proportional to 38,681.87, 58,023.31 and 12,386.61 is: 18,580.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,681.87 : 58,023.31 = 12,386.61 : x
  2. Step 2: Convert to fraction form
    38,681.87/58,023.31 = 12,386.61/x
  3. Step 3: Cross multiply
    38,681.87x = 58,023.31 × 12,386.61
  4. Step 4: Simplify right side
    38,681.87x = 718,712,142.85
  5. Step 5: Solve for x
    x = 718,712,142.85/38,681.87
  6. Step 6: Final answer
    x = 18,580.08

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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.