Home / 15,187.56-20,960.28-9,217.86

Finding the Fourth Proportional to 15,187.56, 20,960.28 and 9,217.86

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Solution

The fourth proportional to 15,187.56, 20,960.28 and 9,217.86 is: 12,721.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,187.56 : 20,960.28 = 9,217.86 : x
  2. Step 2: Convert to fraction form
    15,187.56/20,960.28 = 9,217.86/x
  3. Step 3: Cross multiply
    15,187.56x = 20,960.28 × 9,217.86
  4. Step 4: Simplify right side
    15,187.56x = 193,208,926.60
  5. Step 5: Solve for x
    x = 193,208,926.60/15,187.56
  6. Step 6: Final answer
    x = 12,721.53

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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.