Home / 15,191.32-20,965.94-8,816.55

Finding the Fourth Proportional to 15,191.32, 20,965.94 and 8,816.55

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Solution

The fourth proportional to 15,191.32, 20,965.94 and 8,816.55 is: 12,167.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,191.32 : 20,965.94 = 8,816.55 : x
  2. Step 2: Convert to fraction form
    15,191.32/20,965.94 = 8,816.55/x
  3. Step 3: Cross multiply
    15,191.32x = 20,965.94 × 8,816.55
  4. Step 4: Simplify right side
    15,191.32x = 184,847,168.66
  5. Step 5: Solve for x
    x = 184,847,168.66/15,191.32
  6. Step 6: Final answer
    x = 12,167.94

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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.