Home / 20,246.10-30,369.15-7,099.80

Finding the Fourth Proportional to 20,246.10, 30,369.15 and 7,099.80

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Solution

The fourth proportional to 20,246.10, 30,369.15 and 7,099.80 is: 10,649.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,246.10 : 30,369.15 = 7,099.80 : x
  2. Step 2: Convert to fraction form
    20,246.10/30,369.15 = 7,099.80/x
  3. Step 3: Cross multiply
    20,246.10x = 30,369.15 × 7,099.80
  4. Step 4: Simplify right side
    20,246.10x = 215,614,891.17
  5. Step 5: Solve for x
    x = 215,614,891.17/20,246.10
  6. Step 6: Final answer
    x = 10,649.70

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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.