Home / 20,123.04-30,128.16-15,177.12

Finding the Fourth Proportional to 20,123.04, 30,128.16 and 15,177.12

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Solution

The fourth proportional to 20,123.04, 30,128.16 and 15,177.12 is: 22,723.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.04 : 30,128.16 = 15,177.12 : x
  2. Step 2: Convert to fraction form
    20,123.04/30,128.16 = 15,177.12/x
  3. Step 3: Cross multiply
    20,123.04x = 30,128.16 × 15,177.12
  4. Step 4: Simplify right side
    20,123.04x = 457,258,699.70
  5. Step 5: Solve for x
    x = 457,258,699.70/20,123.04
  6. Step 6: Final answer
    x = 22,723.14

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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.