Home / 20,125.76-30,178.38-11,822.00

Finding the Fourth Proportional to 20,125.76, 30,178.38 and 11,822.00

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Solution

The fourth proportional to 20,125.76, 30,178.38 and 11,822.00 is: 17,726.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,125.76 : 30,178.38 = 11,822.00 : x
  2. Step 2: Convert to fraction form
    20,125.76/30,178.38 = 11,822.00/x
  3. Step 3: Cross multiply
    20,125.76x = 30,178.38 × 11,822.00
  4. Step 4: Simplify right side
    20,125.76x = 356,768,657.47
  5. Step 5: Solve for x
    x = 356,768,657.47/20,125.76
  6. Step 6: Final answer
    x = 17,726.97

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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.