Home / 10,179.28-15,271.11-3,159.16

Finding the Fourth Proportional to 10,179.28, 15,271.11 and 3,159.16

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Solution

The fourth proportional to 10,179.28, 15,271.11 and 3,159.16 is: 4,739.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,179.28 : 15,271.11 = 3,159.16 : x
  2. Step 2: Convert to fraction form
    10,179.28/15,271.11 = 3,159.16/x
  3. Step 3: Cross multiply
    10,179.28x = 15,271.11 × 3,159.16
  4. Step 4: Simplify right side
    10,179.28x = 48,243,879.87
  5. Step 5: Solve for x
    x = 48,243,879.87/10,179.28
  6. Step 6: Final answer
    x = 4,739.42

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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.