Home / 23,100.88-31,857.96-15,140.20

Finding the Fourth Proportional to 23,100.88, 31,857.96 and 15,140.20

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Solution

The fourth proportional to 23,100.88, 31,857.96 and 15,140.20 is: 20,879.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,100.88 : 31,857.96 = 15,140.20 : x
  2. Step 2: Convert to fraction form
    23,100.88/31,857.96 = 15,140.20/x
  3. Step 3: Cross multiply
    23,100.88x = 31,857.96 × 15,140.20
  4. Step 4: Simplify right side
    23,100.88x = 482,335,885.99
  5. Step 5: Solve for x
    x = 482,335,885.99/23,100.88
  6. Step 6: Final answer
    x = 20,879.55

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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.