Home / 18,359.28-27,539.28-5,211.72

Finding the Fourth Proportional to 18,359.28, 27,539.28 and 5,211.72

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Solution

The fourth proportional to 18,359.28, 27,539.28 and 5,211.72 is: 7,817.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,359.28 : 27,539.28 = 5,211.72 : x
  2. Step 2: Convert to fraction form
    18,359.28/27,539.28 = 5,211.72/x
  3. Step 3: Cross multiply
    18,359.28x = 27,539.28 × 5,211.72
  4. Step 4: Simplify right side
    18,359.28x = 143,527,016.36
  5. Step 5: Solve for x
    x = 143,527,016.36/18,359.28
  6. Step 6: Final answer
    x = 7,817.68

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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.