Home / 10,995.30-15,174.45-6,279.57

Finding the Fourth Proportional to 10,995.30, 15,174.45 and 6,279.57

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Solution

The fourth proportional to 10,995.30, 15,174.45 and 6,279.57 is: 8,666.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,995.30 : 15,174.45 = 6,279.57 : x
  2. Step 2: Convert to fraction form
    10,995.30/15,174.45 = 6,279.57/x
  3. Step 3: Cross multiply
    10,995.30x = 15,174.45 × 6,279.57
  4. Step 4: Simplify right side
    10,995.30x = 95,289,020.99
  5. Step 5: Solve for x
    x = 95,289,020.99/10,995.30
  6. Step 6: Final answer
    x = 8,666.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.