Home / 15,189.48-20,961.45-8,474.71

Finding the Fourth Proportional to 15,189.48, 20,961.45 and 8,474.71

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Solution

The fourth proportional to 15,189.48, 20,961.45 and 8,474.71 is: 11,695.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,189.48 : 20,961.45 = 8,474.71 : x
  2. Step 2: Convert to fraction form
    15,189.48/20,961.45 = 8,474.71/x
  3. Step 3: Cross multiply
    15,189.48x = 20,961.45 × 8,474.71
  4. Step 4: Simplify right side
    15,189.48x = 177,642,209.93
  5. Step 5: Solve for x
    x = 177,642,209.93/15,189.48
  6. Step 6: Final answer
    x = 11,695.08

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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.