Home / 20,278.48-30,422.40-8,592.16

Finding the Fourth Proportional to 20,278.48, 30,422.40 and 8,592.16

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Solution

The fourth proportional to 20,278.48, 30,422.40 and 8,592.16 is: 12,890.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.48 : 30,422.40 = 8,592.16 : x
  2. Step 2: Convert to fraction form
    20,278.48/30,422.40 = 8,592.16/x
  3. Step 3: Cross multiply
    20,278.48x = 30,422.40 × 8,592.16
  4. Step 4: Simplify right side
    20,278.48x = 261,394,128.38
  5. Step 5: Solve for x
    x = 261,394,128.38/20,278.48
  6. Step 6: Final answer
    x = 12,890.22

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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.