Home / 15,755.52-21,744.80-9,043.20

Finding the Fourth Proportional to 15,755.52, 21,744.80 and 9,043.20

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Solution

The fourth proportional to 15,755.52, 21,744.80 and 9,043.20 is: 12,480.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,755.52 : 21,744.80 = 9,043.20 : x
  2. Step 2: Convert to fraction form
    15,755.52/21,744.80 = 9,043.20/x
  3. Step 3: Cross multiply
    15,755.52x = 21,744.80 × 9,043.20
  4. Step 4: Simplify right side
    15,755.52x = 196,642,575.36
  5. Step 5: Solve for x
    x = 196,642,575.36/15,755.52
  6. Step 6: Final answer
    x = 12,480.87

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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.