Home / 15,171.85-20,938.14-10,447.93

Finding the Fourth Proportional to 15,171.85, 20,938.14 and 10,447.93

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Solution

The fourth proportional to 15,171.85, 20,938.14 and 10,447.93 is: 14,418.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,171.85 : 20,938.14 = 10,447.93 : x
  2. Step 2: Convert to fraction form
    15,171.85/20,938.14 = 10,447.93/x
  3. Step 3: Cross multiply
    15,171.85x = 20,938.14 × 10,447.93
  4. Step 4: Simplify right side
    15,171.85x = 218,760,221.05
  5. Step 5: Solve for x
    x = 218,760,221.05/15,171.85
  6. Step 6: Final answer
    x = 14,418.82

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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.