Home / 39,126.60-53,994.72-21,221.88

Finding the Fourth Proportional to 39,126.60, 53,994.72 and 21,221.88

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Solution

The fourth proportional to 39,126.60, 53,994.72 and 21,221.88 is: 29,286.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,126.60 : 53,994.72 = 21,221.88 : x
  2. Step 2: Convert to fraction form
    39,126.60/53,994.72 = 21,221.88/x
  3. Step 3: Cross multiply
    39,126.60x = 53,994.72 × 21,221.88
  4. Step 4: Simplify right side
    39,126.60x = 1,145,869,468.47
  5. Step 5: Solve for x
    x = 1,145,869,468.47/39,126.60
  6. Step 6: Final answer
    x = 29,286.20

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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.