Home / 39,395.71-54,366.24-21,491.11

Finding the Fourth Proportional to 39,395.71, 54,366.24 and 21,491.11

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Solution

The fourth proportional to 39,395.71, 54,366.24 and 21,491.11 is: 29,657.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,395.71 : 54,366.24 = 21,491.11 : x
  2. Step 2: Convert to fraction form
    39,395.71/54,366.24 = 21,491.11/x
  3. Step 3: Cross multiply
    39,395.71x = 54,366.24 × 21,491.11
  4. Step 4: Simplify right side
    39,395.71x = 1,168,390,844.13
  5. Step 5: Solve for x
    x = 1,168,390,844.13/39,395.71
  6. Step 6: Final answer
    x = 29,657.82

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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.