Home / 39,234.97-54,145.32-21,331.18

Finding the Fourth Proportional to 39,234.97, 54,145.32 and 21,331.18

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Solution

The fourth proportional to 39,234.97, 54,145.32 and 21,331.18 is: 29,437.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,234.97 : 54,145.32 = 21,331.18 : x
  2. Step 2: Convert to fraction form
    39,234.97/54,145.32 = 21,331.18/x
  3. Step 3: Cross multiply
    39,234.97x = 54,145.32 × 21,331.18
  4. Step 4: Simplify right side
    39,234.97x = 1,154,983,296.35
  5. Step 5: Solve for x
    x = 1,154,983,296.35/39,234.97
  6. Step 6: Final answer
    x = 29,437.60

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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.