Home / 39,615.19-54,670.23-21,711.29

Finding the Fourth Proportional to 39,615.19, 54,670.23 and 21,711.29

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Solution

The fourth proportional to 39,615.19, 54,670.23 and 21,711.29 is: 29,962.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,615.19 : 54,670.23 = 21,711.29 : x
  2. Step 2: Convert to fraction form
    39,615.19/54,670.23 = 21,711.29/x
  3. Step 3: Cross multiply
    39,615.19x = 54,670.23 × 21,711.29
  4. Step 4: Simplify right side
    39,615.19x = 1,186,961,217.90
  5. Step 5: Solve for x
    x = 1,186,961,217.90/39,615.19
  6. Step 6: Final answer
    x = 29,962.28

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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.