Home / 39,200.20-54,095.36-21,294.80

Finding the Fourth Proportional to 39,200.20, 54,095.36 and 21,294.80

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Solution

The fourth proportional to 39,200.20, 54,095.36 and 21,294.80 is: 29,386.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,200.20 : 54,095.36 = 21,294.80 : x
  2. Step 2: Convert to fraction form
    39,200.20/54,095.36 = 21,294.80/x
  3. Step 3: Cross multiply
    39,200.20x = 54,095.36 × 21,294.80
  4. Step 4: Simplify right side
    39,200.20x = 1,151,949,872.13
  5. Step 5: Solve for x
    x = 1,151,949,872.13/39,200.20
  6. Step 6: Final answer
    x = 29,386.33

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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.