Home / 20,251.09-27,946.10-11,177.30

Finding the Fourth Proportional to 20,251.09, 27,946.10 and 11,177.30

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Solution

The fourth proportional to 20,251.09, 27,946.10 and 11,177.30 is: 15,424.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,251.09 : 27,946.10 = 11,177.30 : x
  2. Step 2: Convert to fraction form
    20,251.09/27,946.10 = 11,177.30/x
  3. Step 3: Cross multiply
    20,251.09x = 27,946.10 × 11,177.30
  4. Step 4: Simplify right side
    20,251.09x = 312,361,943.53
  5. Step 5: Solve for x
    x = 312,361,943.53/20,251.09
  6. Step 6: Final answer
    x = 15,424.45

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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.