Home / 20,348-30,660.65-16,731.25

Finding the Fourth Proportional to 20,348, 30,660.65 and 16,731.25

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Solution

The fourth proportional to 20,348, 30,660.65 and 16,731.25 is: 25,210.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,348 : 30,660.65 = 16,731.25 : x
  2. Step 2: Convert to fraction form
    20,348/30,660.65 = 16,731.25/x
  3. Step 3: Cross multiply
    20,348x = 30,660.65 × 16,731.25
  4. Step 4: Simplify right side
    20,348x = 512,991,042.14
  5. Step 5: Solve for x
    x = 512,991,042.14/20,348
  6. Step 6: Final answer
    x = 25,210.88

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.