Home / 11,279.21-15,570.38-7,251.89

Finding the Fourth Proportional to 11,279.21, 15,570.38 and 7,251.89

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Solution

The fourth proportional to 11,279.21, 15,570.38 and 7,251.89 is: 10,010.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,279.21 : 15,570.38 = 7,251.89 : x
  2. Step 2: Convert to fraction form
    11,279.21/15,570.38 = 7,251.89/x
  3. Step 3: Cross multiply
    11,279.21x = 15,570.38 × 7,251.89
  4. Step 4: Simplify right side
    11,279.21x = 112,914,646.76
  5. Step 5: Solve for x
    x = 112,914,646.76/11,279.21
  6. Step 6: Final answer
    x = 10,010.86

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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.