Home / 39,764.71-54,876.35-21,616.66

Finding the Fourth Proportional to 39,764.71, 54,876.35 and 21,616.66

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Solution

The fourth proportional to 39,764.71, 54,876.35 and 21,616.66 is: 29,831.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,764.71 : 54,876.35 = 21,616.66 : x
  2. Step 2: Convert to fraction form
    39,764.71/54,876.35 = 21,616.66/x
  3. Step 3: Cross multiply
    39,764.71x = 54,876.35 × 21,616.66
  4. Step 4: Simplify right side
    39,764.71x = 1,186,243,125.61
  5. Step 5: Solve for x
    x = 1,186,243,125.61/39,764.71
  6. Step 6: Final answer
    x = 29,831.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.