Home / 10,129.32-15,191.91-3,107.52

Finding the Fourth Proportional to 10,129.32, 15,191.91 and 3,107.52

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Solution

The fourth proportional to 10,129.32, 15,191.91 and 3,107.52 is: 4,660.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.32 : 15,191.91 = 3,107.52 : x
  2. Step 2: Convert to fraction form
    10,129.32/15,191.91 = 3,107.52/x
  3. Step 3: Cross multiply
    10,129.32x = 15,191.91 × 3,107.52
  4. Step 4: Simplify right side
    10,129.32x = 47,209,164.16
  5. Step 5: Solve for x
    x = 47,209,164.16/10,129.32
  6. Step 6: Final answer
    x = 4,660.64

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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.