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Finding the Fourth Proportional to 11,492.75, 15,860.67 and 8,655.12

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Solution

The fourth proportional to 11,492.75, 15,860.67 and 8,655.12 is: 11,944.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,492.75 : 15,860.67 = 8,655.12 : x
  2. Step 2: Convert to fraction form
    11,492.75/15,860.67 = 8,655.12/x
  3. Step 3: Cross multiply
    11,492.75x = 15,860.67 × 8,655.12
  4. Step 4: Simplify right side
    11,492.75x = 137,275,922.83
  5. Step 5: Solve for x
    x = 137,275,922.83/11,492.75
  6. Step 6: Final answer
    x = 11,944.57

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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.