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Finding the Fourth Proportional to 17,780.80, 26,642.40 and 14,843.20

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Solution

The fourth proportional to 17,780.80, 26,642.40 and 14,843.20 is: 22,240.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,780.80 : 26,642.40 = 14,843.20 : x
  2. Step 2: Convert to fraction form
    17,780.80/26,642.40 = 14,843.20/x
  3. Step 3: Cross multiply
    17,780.80x = 26,642.40 × 14,843.20
  4. Step 4: Simplify right side
    17,780.80x = 395,458,471.68
  5. Step 5: Solve for x
    x = 395,458,471.68/17,780.80
  6. Step 6: Final answer
    x = 22,240.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.