Home / 10,231.20-15,314.40-5,539.50

Finding the Fourth Proportional to 10,231.20, 15,314.40 and 5,539.50

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Solution

The fourth proportional to 10,231.20, 15,314.40 and 5,539.50 is: 8,291.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,231.20 : 15,314.40 = 5,539.50 : x
  2. Step 2: Convert to fraction form
    10,231.20/15,314.40 = 5,539.50/x
  3. Step 3: Cross multiply
    10,231.20x = 15,314.40 × 5,539.50
  4. Step 4: Simplify right side
    10,231.20x = 84,834,118.80
  5. Step 5: Solve for x
    x = 84,834,118.80/10,231.20
  6. Step 6: Final answer
    x = 8,291.71

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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.