Home / 11,306.10-15,615.19-7,714.91

Finding the Fourth Proportional to 11,306.10, 15,615.19 and 7,714.91

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Solution

The fourth proportional to 11,306.10, 15,615.19 and 7,714.91 is: 10,655.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,306.10 : 15,615.19 = 7,714.91 : x
  2. Step 2: Convert to fraction form
    11,306.10/15,615.19 = 7,714.91/x
  3. Step 3: Cross multiply
    11,306.10x = 15,615.19 × 7,714.91
  4. Step 4: Simplify right side
    11,306.10x = 120,469,688.12
  5. Step 5: Solve for x
    x = 120,469,688.12/11,306.10
  6. Step 6: Final answer
    x = 10,655.28

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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.