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Finding the Fourth Proportional to 15,117.16, 20,865.18 and 8,833.18

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Solution

The fourth proportional to 15,117.16, 20,865.18 and 8,833.18 is: 12,191.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.16 : 20,865.18 = 8,833.18 : x
  2. Step 2: Convert to fraction form
    15,117.16/20,865.18 = 8,833.18/x
  3. Step 3: Cross multiply
    15,117.16x = 20,865.18 × 8,833.18
  4. Step 4: Simplify right side
    15,117.16x = 184,305,890.67
  5. Step 5: Solve for x
    x = 184,305,890.67/15,117.16
  6. Step 6: Final answer
    x = 12,191.83

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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.