Home / 10,479.36-15,709.20-3,549.12

Finding the Fourth Proportional to 10,479.36, 15,709.20 and 3,549.12

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Solution

The fourth proportional to 10,479.36, 15,709.20 and 3,549.12 is: 5,320.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,479.36 : 15,709.20 = 3,549.12 : x
  2. Step 2: Convert to fraction form
    10,479.36/15,709.20 = 3,549.12/x
  3. Step 3: Cross multiply
    10,479.36x = 15,709.20 × 3,549.12
  4. Step 4: Simplify right side
    10,479.36x = 55,753,835.90
  5. Step 5: Solve for x
    x = 55,753,835.90/10,479.36
  6. Step 6: Final answer
    x = 5,320.35

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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.