Home / 39,447.49-54,438.85-21,543.56

Finding the Fourth Proportional to 39,447.49, 54,438.85 and 21,543.56

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Solution

The fourth proportional to 39,447.49, 54,438.85 and 21,543.56 is: 29,730.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,447.49 : 54,438.85 = 21,543.56 : x
  2. Step 2: Convert to fraction form
    39,447.49/54,438.85 = 21,543.56/x
  3. Step 3: Cross multiply
    39,447.49x = 54,438.85 × 21,543.56
  4. Step 4: Simplify right side
    39,447.49x = 1,172,806,631.31
  5. Step 5: Solve for x
    x = 1,172,806,631.31/39,447.49
  6. Step 6: Final answer
    x = 29,730.83

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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.