Home / 11,461.18-17,218.08-8,091.72

Finding the Fourth Proportional to 11,461.18, 17,218.08 and 8,091.72

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Solution

The fourth proportional to 11,461.18, 17,218.08 and 8,091.72 is: 12,156.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,461.18 : 17,218.08 = 8,091.72 : x
  2. Step 2: Convert to fraction form
    11,461.18/17,218.08 = 8,091.72/x
  3. Step 3: Cross multiply
    11,461.18x = 17,218.08 × 8,091.72
  4. Step 4: Simplify right side
    11,461.18x = 139,323,882.30
  5. Step 5: Solve for x
    x = 139,323,882.30/11,461.18
  6. Step 6: Final answer
    x = 12,156.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.