Home / 38,989.64-58,470.66-12,689.48

Finding the Fourth Proportional to 38,989.64, 58,470.66 and 12,689.48

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Solution

The fourth proportional to 38,989.64, 58,470.66 and 12,689.48 is: 19,029.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,989.64 : 58,470.66 = 12,689.48 : x
  2. Step 2: Convert to fraction form
    38,989.64/58,470.66 = 12,689.48/x
  3. Step 3: Cross multiply
    38,989.64x = 58,470.66 × 12,689.48
  4. Step 4: Simplify right side
    38,989.64x = 741,962,270.66
  5. Step 5: Solve for x
    x = 741,962,270.66/38,989.64
  6. Step 6: Final answer
    x = 19,029.73

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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.