Home / 10,215.20-15,329.40-5,538.44

Finding the Fourth Proportional to 10,215.20, 15,329.40 and 5,538.44

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Solution

The fourth proportional to 10,215.20, 15,329.40 and 5,538.44 is: 8,311.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.20 : 15,329.40 = 5,538.44 : x
  2. Step 2: Convert to fraction form
    10,215.20/15,329.40 = 5,538.44/x
  3. Step 3: Cross multiply
    10,215.20x = 15,329.40 × 5,538.44
  4. Step 4: Simplify right side
    10,215.20x = 84,900,962.14
  5. Step 5: Solve for x
    x = 84,900,962.14/10,215.20
  6. Step 6: Final answer
    x = 8,311.24

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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.