Home / 18,478.53-27,722.40-5,330.90

Finding the Fourth Proportional to 18,478.53, 27,722.40 and 5,330.90

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Solution

The fourth proportional to 18,478.53, 27,722.40 and 5,330.90 is: 7,997.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,478.53 : 27,722.40 = 5,330.90 : x
  2. Step 2: Convert to fraction form
    18,478.53/27,722.40 = 5,330.90/x
  3. Step 3: Cross multiply
    18,478.53x = 27,722.40 × 5,330.90
  4. Step 4: Simplify right side
    18,478.53x = 147,785,265.52
  5. Step 5: Solve for x
    x = 147,785,265.52/18,478.53
  6. Step 6: Final answer
    x = 7,997.67

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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.