Home / 39,896.92-59,862.96-21,172.40

Finding the Fourth Proportional to 39,896.92, 59,862.96 and 21,172.40

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Solution

The fourth proportional to 39,896.92, 59,862.96 and 21,172.40 is: 31,767.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,896.92 : 59,862.96 = 21,172.40 : x
  2. Step 2: Convert to fraction form
    39,896.92/59,862.96 = 21,172.40/x
  3. Step 3: Cross multiply
    39,896.92x = 59,862.96 × 21,172.40
  4. Step 4: Simplify right side
    39,896.92x = 1,267,442,534.30
  5. Step 5: Solve for x
    x = 1,267,442,534.30/39,896.92
  6. Step 6: Final answer
    x = 31,767.93

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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.