Home / 38,932.74-58,399.11-12,639.51

Finding the Fourth Proportional to 38,932.74, 58,399.11 and 12,639.51

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Solution

The fourth proportional to 38,932.74, 58,399.11 and 12,639.51 is: 18,959.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,932.74 : 58,399.11 = 12,639.51 : x
  2. Step 2: Convert to fraction form
    38,932.74/58,399.11 = 12,639.51/x
  3. Step 3: Cross multiply
    38,932.74x = 58,399.11 × 12,639.51
  4. Step 4: Simplify right side
    38,932.74x = 738,136,134.84
  5. Step 5: Solve for x
    x = 738,136,134.84/38,932.74
  6. Step 6: Final answer
    x = 18,959.27

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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.