Home / 39,411.75-54,388.02-21,506.70

Finding the Fourth Proportional to 39,411.75, 54,388.02 and 21,506.70

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Solution

The fourth proportional to 39,411.75, 54,388.02 and 21,506.70 is: 29,679.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,411.75 : 54,388.02 = 21,506.70 : x
  2. Step 2: Convert to fraction form
    39,411.75/54,388.02 = 21,506.70/x
  3. Step 3: Cross multiply
    39,411.75x = 54,388.02 × 21,506.70
  4. Step 4: Simplify right side
    39,411.75x = 1,169,706,829.73
  5. Step 5: Solve for x
    x = 1,169,706,829.73/39,411.75
  6. Step 6: Final answer
    x = 29,679.14

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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.