Home / 20,006.18-30,006.11-12,587.93

Finding the Fourth Proportional to 20,006.18, 30,006.11 and 12,587.93

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Solution

The fourth proportional to 20,006.18, 30,006.11 and 12,587.93 is: 18,879.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,006.18 : 30,006.11 = 12,587.93 : x
  2. Step 2: Convert to fraction form
    20,006.18/30,006.11 = 12,587.93/x
  3. Step 3: Cross multiply
    20,006.18x = 30,006.11 × 12,587.93
  4. Step 4: Simplify right side
    20,006.18x = 377,714,693.69
  5. Step 5: Solve for x
    x = 377,714,693.69/20,006.18
  6. Step 6: Final answer
    x = 18,879.91

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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.