Home / 20,070.18-30,099.60-12,663.54

Finding the Fourth Proportional to 20,070.18, 30,099.60 and 12,663.54

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Solution

The fourth proportional to 20,070.18, 30,099.60 and 12,663.54 is: 18,991.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.18 : 30,099.60 = 12,663.54 : x
  2. Step 2: Convert to fraction form
    20,070.18/30,099.60 = 12,663.54/x
  3. Step 3: Cross multiply
    20,070.18x = 30,099.60 × 12,663.54
  4. Step 4: Simplify right side
    20,070.18x = 381,167,488.58
  5. Step 5: Solve for x
    x = 381,167,488.58/20,070.18
  6. Step 6: Final answer
    x = 18,991.73

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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.