Home / 39,380.84-54,343.92-21,475.52

Finding the Fourth Proportional to 39,380.84, 54,343.92 and 21,475.52

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Solution

The fourth proportional to 39,380.84, 54,343.92 and 21,475.52 is: 29,635.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,380.84 : 54,343.92 = 21,475.52 : x
  2. Step 2: Convert to fraction form
    39,380.84/54,343.92 = 21,475.52/x
  3. Step 3: Cross multiply
    39,380.84x = 54,343.92 × 21,475.52
  4. Step 4: Simplify right side
    39,380.84x = 1,167,063,940.84
  5. Step 5: Solve for x
    x = 1,167,063,940.84/39,380.84
  6. Step 6: Final answer
    x = 29,635.32

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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.