Home / 25,905.80-38,829.90-11,112.20

Finding the Fourth Proportional to 25,905.80, 38,829.90 and 11,112.20

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Solution

The fourth proportional to 25,905.80, 38,829.90 and 11,112.20 is: 16,655.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,905.80 : 38,829.90 = 11,112.20 : x
  2. Step 2: Convert to fraction form
    25,905.80/38,829.90 = 11,112.20/x
  3. Step 3: Cross multiply
    25,905.80x = 38,829.90 × 11,112.20
  4. Step 4: Simplify right side
    25,905.80x = 431,485,614.78
  5. Step 5: Solve for x
    x = 431,485,614.78/25,905.80
  6. Step 6: Final answer
    x = 16,655.95

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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.