Home / 10,939.50-15,100.11-7,165.08

Finding the Fourth Proportional to 10,939.50, 15,100.11 and 7,165.08

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Solution

The fourth proportional to 10,939.50, 15,100.11 and 7,165.08 is: 9,890.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939.50 : 15,100.11 = 7,165.08 : x
  2. Step 2: Convert to fraction form
    10,939.50/15,100.11 = 7,165.08/x
  3. Step 3: Cross multiply
    10,939.50x = 15,100.11 × 7,165.08
  4. Step 4: Simplify right side
    10,939.50x = 108,193,496.16
  5. Step 5: Solve for x
    x = 108,193,496.16/10,939.50
  6. Step 6: Final answer
    x = 9,890.17

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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.