Home / 20,215.40-30,324.90-8,526.92

Finding the Fourth Proportional to 20,215.40, 30,324.90 and 8,526.92

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Solution

The fourth proportional to 20,215.40, 30,324.90 and 8,526.92 is: 12,791.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.40 : 30,324.90 = 8,526.92 : x
  2. Step 2: Convert to fraction form
    20,215.40/30,324.90 = 8,526.92/x
  3. Step 3: Cross multiply
    20,215.40x = 30,324.90 × 8,526.92
  4. Step 4: Simplify right side
    20,215.40x = 258,577,996.31
  5. Step 5: Solve for x
    x = 258,577,996.31/20,215.40
  6. Step 6: Final answer
    x = 12,791.14

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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.