Home / 39,411.26-54,387.70-21,506.66

Finding the Fourth Proportional to 39,411.26, 54,387.70 and 21,506.66

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Solution

The fourth proportional to 39,411.26, 54,387.70 and 21,506.66 is: 29,679.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,411.26 : 54,387.70 = 21,506.66 : x
  2. Step 2: Convert to fraction form
    39,411.26/54,387.70 = 21,506.66/x
  3. Step 3: Cross multiply
    39,411.26x = 54,387.70 × 21,506.66
  4. Step 4: Simplify right side
    39,411.26x = 1,169,697,772.08
  5. Step 5: Solve for x
    x = 1,169,697,772.08/39,411.26
  6. Step 6: Final answer
    x = 29,679.28

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1.5x scale

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.