Home / 21,350.76-31,885.97-18,197.16

Finding the Fourth Proportional to 21,350.76, 31,885.97 and 18,197.16

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Solution

The fourth proportional to 21,350.76, 31,885.97 and 18,197.16 is: 27,176.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,350.76 : 31,885.97 = 18,197.16 : x
  2. Step 2: Convert to fraction form
    21,350.76/31,885.97 = 18,197.16/x
  3. Step 3: Cross multiply
    21,350.76x = 31,885.97 × 18,197.16
  4. Step 4: Simplify right side
    21,350.76x = 580,234,097.85
  5. Step 5: Solve for x
    x = 580,234,097.85/21,350.76
  6. Step 6: Final answer
    x = 27,176.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.