Home / 20,123.64-27,772.38-11,742.84

Finding the Fourth Proportional to 20,123.64, 27,772.38 and 11,742.84

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Solution

The fourth proportional to 20,123.64, 27,772.38 and 11,742.84 is: 16,206.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.64 : 27,772.38 = 11,742.84 : x
  2. Step 2: Convert to fraction form
    20,123.64/27,772.38 = 11,742.84/x
  3. Step 3: Cross multiply
    20,123.64x = 27,772.38 × 11,742.84
  4. Step 4: Simplify right side
    20,123.64x = 326,126,614.76
  5. Step 5: Solve for x
    x = 326,126,614.76/20,123.64
  6. Step 6: Final answer
    x = 16,206.14

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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.