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Finding the Fourth Proportional to 11,459.16, 15,808.62 and 8,104.85

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Solution

The fourth proportional to 11,459.16, 15,808.62 and 8,104.85 is: 11,181.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,459.16 : 15,808.62 = 8,104.85 : x
  2. Step 2: Convert to fraction form
    11,459.16/15,808.62 = 8,104.85/x
  3. Step 3: Cross multiply
    11,459.16x = 15,808.62 × 8,104.85
  4. Step 4: Simplify right side
    11,459.16x = 128,126,445.16
  5. Step 5: Solve for x
    x = 128,126,445.16/11,459.16
  6. Step 6: Final answer
    x = 11,181.14

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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.