Home / 20,428.46-30,644.45-5,637.38

Finding the Fourth Proportional to 20,428.46, 30,644.45 and 5,637.38

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Solution

The fourth proportional to 20,428.46, 30,644.45 and 5,637.38 is: 8,456.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,428.46 : 30,644.45 = 5,637.38 : x
  2. Step 2: Convert to fraction form
    20,428.46/30,644.45 = 5,637.38/x
  3. Step 3: Cross multiply
    20,428.46x = 30,644.45 × 5,637.38
  4. Step 4: Simplify right side
    20,428.46x = 172,754,256.32
  5. Step 5: Solve for x
    x = 172,754,256.32/20,428.46
  6. Step 6: Final answer
    x = 8,456.55

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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.