Home / 39,330.87-54,276.30-21,425.82

Finding the Fourth Proportional to 39,330.87, 54,276.30 and 21,425.82

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Solution

The fourth proportional to 39,330.87, 54,276.30 and 21,425.82 is: 29,567.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,330.87 : 54,276.30 = 21,425.82 : x
  2. Step 2: Convert to fraction form
    39,330.87/54,276.30 = 21,425.82/x
  3. Step 3: Cross multiply
    39,330.87x = 54,276.30 × 21,425.82
  4. Step 4: Simplify right side
    39,330.87x = 1,162,914,234.07
  5. Step 5: Solve for x
    x = 1,162,914,234.07/39,330.87
  6. Step 6: Final answer
    x = 29,567.47

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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.