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Finding the Fourth Proportional to 11,279, 15,572.08 and 7,247.46

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Solution

The fourth proportional to 11,279, 15,572.08 and 7,247.46 is: 10,006.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,279 : 15,572.08 = 7,247.46 : x
  2. Step 2: Convert to fraction form
    11,279/15,572.08 = 7,247.46/x
  3. Step 3: Cross multiply
    11,279x = 15,572.08 × 7,247.46
  4. Step 4: Simplify right side
    11,279x = 112,858,026.92
  5. Step 5: Solve for x
    x = 112,858,026.92/11,279
  6. Step 6: Final answer
    x = 10,006.03

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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.