Home / 28,422.30-39,247.56-17,830.20

Finding the Fourth Proportional to 28,422.30, 39,247.56 and 17,830.20

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Solution

The fourth proportional to 28,422.30, 39,247.56 and 17,830.20 is: 24,621.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,422.30 : 39,247.56 = 17,830.20 : x
  2. Step 2: Convert to fraction form
    28,422.30/39,247.56 = 17,830.20/x
  3. Step 3: Cross multiply
    28,422.30x = 39,247.56 × 17,830.20
  4. Step 4: Simplify right side
    28,422.30x = 699,791,844.31
  5. Step 5: Solve for x
    x = 699,791,844.31/28,422.30
  6. Step 6: Final answer
    x = 24,621.23

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Double scale
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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.