Home / 20,472.13-30,688.75-8,000.16

Finding the Fourth Proportional to 20,472.13, 30,688.75 and 8,000.16

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Solution

The fourth proportional to 20,472.13, 30,688.75 and 8,000.16 is: 11,992.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,472.13 : 30,688.75 = 8,000.16 : x
  2. Step 2: Convert to fraction form
    20,472.13/30,688.75 = 8,000.16/x
  3. Step 3: Cross multiply
    20,472.13x = 30,688.75 × 8,000.16
  4. Step 4: Simplify right side
    20,472.13x = 245,514,910.20
  5. Step 5: Solve for x
    x = 245,514,910.20/20,472.13
  6. Step 6: Final answer
    x = 11,992.64

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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.