Home / 39,330.68-54,274.77-21,425.82

Finding the Fourth Proportional to 39,330.68, 54,274.77 and 21,425.82

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Solution

The fourth proportional to 39,330.68, 54,274.77 and 21,425.82 is: 29,566.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,330.68 : 54,274.77 = 21,425.82 : x
  2. Step 2: Convert to fraction form
    39,330.68/54,274.77 = 21,425.82/x
  3. Step 3: Cross multiply
    39,330.68x = 54,274.77 × 21,425.82
  4. Step 4: Simplify right side
    39,330.68x = 1,162,881,452.56
  5. Step 5: Solve for x
    x = 1,162,881,452.56/39,330.68
  6. Step 6: Final answer
    x = 29,566.78

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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.