Home / 28,422.20-42,668.40-17,892.20

Finding the Fourth Proportional to 28,422.20, 42,668.40 and 17,892.20

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Solution

The fourth proportional to 28,422.20, 42,668.40 and 17,892.20 is: 26,860.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,422.20 : 42,668.40 = 17,892.20 : x
  2. Step 2: Convert to fraction form
    28,422.20/42,668.40 = 17,892.20/x
  3. Step 3: Cross multiply
    28,422.20x = 42,668.40 × 17,892.20
  4. Step 4: Simplify right side
    28,422.20x = 763,431,546.48
  5. Step 5: Solve for x
    x = 763,431,546.48/28,422.20
  6. Step 6: Final answer
    x = 26,860.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.