Home / 26,780.52-40,147.02-10,128.90

Finding the Fourth Proportional to 26,780.52, 40,147.02 and 10,128.90

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Solution

The fourth proportional to 26,780.52, 40,147.02 and 10,128.90 is: 15,184.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,780.52 : 40,147.02 = 10,128.90 : x
  2. Step 2: Convert to fraction form
    26,780.52/40,147.02 = 10,128.90/x
  3. Step 3: Cross multiply
    26,780.52x = 40,147.02 × 10,128.90
  4. Step 4: Simplify right side
    26,780.52x = 406,645,150.88
  5. Step 5: Solve for x
    x = 406,645,150.88/26,780.52
  6. Step 6: Final answer
    x = 15,184.36

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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.