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Finding the Fourth Proportional to 39,287.88, 54,203.88 and 22,290.24

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Solution

The fourth proportional to 39,287.88, 54,203.88 and 22,290.24 is: 30,752.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,287.88 : 54,203.88 = 22,290.24 : x
  2. Step 2: Convert to fraction form
    39,287.88/54,203.88 = 22,290.24/x
  3. Step 3: Cross multiply
    39,287.88x = 54,203.88 × 22,290.24
  4. Step 4: Simplify right side
    39,287.88x = 1,208,217,494.13
  5. Step 5: Solve for x
    x = 1,208,217,494.13/39,287.88
  6. Step 6: Final answer
    x = 30,752.93

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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.