Home / 15,189.47-20,961.53-8,475.38

Finding the Fourth Proportional to 15,189.47, 20,961.53 and 8,475.38

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Solution

The fourth proportional to 15,189.47, 20,961.53 and 8,475.38 is: 11,696.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,189.47 : 20,961.53 = 8,475.38 : x
  2. Step 2: Convert to fraction form
    15,189.47/20,961.53 = 8,475.38/x
  3. Step 3: Cross multiply
    15,189.47x = 20,961.53 × 8,475.38
  4. Step 4: Simplify right side
    15,189.47x = 177,656,973.94
  5. Step 5: Solve for x
    x = 177,656,973.94/15,189.47
  6. Step 6: Final answer
    x = 11,696.06

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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.