Home / 21,882.15-30,197.49-12,450.71

Finding the Fourth Proportional to 21,882.15, 30,197.49 and 12,450.71

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Solution

The fourth proportional to 21,882.15, 30,197.49 and 12,450.71 is: 17,182.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,882.15 : 30,197.49 = 12,450.71 : x
  2. Step 2: Convert to fraction form
    21,882.15/30,197.49 = 12,450.71/x
  3. Step 3: Cross multiply
    21,882.15x = 30,197.49 × 12,450.71
  4. Step 4: Simplify right side
    21,882.15x = 375,980,266.21
  5. Step 5: Solve for x
    x = 375,980,266.21/21,882.15
  6. Step 6: Final answer
    x = 17,182.05

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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.