Home / 18,270.32-27,406.68-5,123.20

Finding the Fourth Proportional to 18,270.32, 27,406.68 and 5,123.20

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Solution

The fourth proportional to 18,270.32, 27,406.68 and 5,123.20 is: 7,685.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270.32 : 27,406.68 = 5,123.20 : x
  2. Step 2: Convert to fraction form
    18,270.32/27,406.68 = 5,123.20/x
  3. Step 3: Cross multiply
    18,270.32x = 27,406.68 × 5,123.20
  4. Step 4: Simplify right side
    18,270.32x = 140,409,902.98
  5. Step 5: Solve for x
    x = 140,409,902.98/18,270.32
  6. Step 6: Final answer
    x = 7,685.14

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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.