Home / 20,253.02-27,949.20-11,178.17

Finding the Fourth Proportional to 20,253.02, 27,949.20 and 11,178.17

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Solution

The fourth proportional to 20,253.02, 27,949.20 and 11,178.17 is: 15,425.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,253.02 : 27,949.20 = 11,178.17 : x
  2. Step 2: Convert to fraction form
    20,253.02/27,949.20 = 11,178.17/x
  3. Step 3: Cross multiply
    20,253.02x = 27,949.20 × 11,178.17
  4. Step 4: Simplify right side
    20,253.02x = 312,420,908.96
  5. Step 5: Solve for x
    x = 312,420,908.96/20,253.02
  6. Step 6: Final answer
    x = 15,425.89

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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.