Home / 10,122.66-15,184.91-5,189.15

Finding the Fourth Proportional to 10,122.66, 15,184.91 and 5,189.15

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Solution

The fourth proportional to 10,122.66, 15,184.91 and 5,189.15 is: 7,784.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,122.66 : 15,184.91 = 5,189.15 : x
  2. Step 2: Convert to fraction form
    10,122.66/15,184.91 = 5,189.15/x
  3. Step 3: Cross multiply
    10,122.66x = 15,184.91 × 5,189.15
  4. Step 4: Simplify right side
    10,122.66x = 78,796,826.66
  5. Step 5: Solve for x
    x = 78,796,826.66/10,122.66
  6. Step 6: Final answer
    x = 7,784.20

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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.