Home / 20,123.64-30,154.68-13,525.38

Finding the Fourth Proportional to 20,123.64, 30,154.68 and 13,525.38

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Solution

The fourth proportional to 20,123.64, 30,154.68 and 13,525.38 is: 20,267.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.64 : 30,154.68 = 13,525.38 : x
  2. Step 2: Convert to fraction form
    20,123.64/30,154.68 = 13,525.38/x
  3. Step 3: Cross multiply
    20,123.64x = 30,154.68 × 13,525.38
  4. Step 4: Simplify right side
    20,123.64x = 407,853,505.78
  5. Step 5: Solve for x
    x = 407,853,505.78/20,123.64
  6. Step 6: Final answer
    x = 20,267.38

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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.