Home / 39,380.70-54,344.70-21,475.74

Finding the Fourth Proportional to 39,380.70, 54,344.70 and 21,475.74

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Solution

The fourth proportional to 39,380.70, 54,344.70 and 21,475.74 is: 29,636.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,380.70 : 54,344.70 = 21,475.74 : x
  2. Step 2: Convert to fraction form
    39,380.70/54,344.70 = 21,475.74/x
  3. Step 3: Cross multiply
    39,380.70x = 54,344.70 × 21,475.74
  4. Step 4: Simplify right side
    39,380.70x = 1,167,092,647.58
  5. Step 5: Solve for x
    x = 1,167,092,647.58/39,380.70
  6. Step 6: Final answer
    x = 29,636.16

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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.