Home / 20,363.40-30,538.22-7,213.86

Finding the Fourth Proportional to 20,363.40, 30,538.22 and 7,213.86

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Solution

The fourth proportional to 20,363.40, 30,538.22 and 7,213.86 is: 10,818.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,363.40 : 30,538.22 = 7,213.86 : x
  2. Step 2: Convert to fraction form
    20,363.40/30,538.22 = 7,213.86/x
  3. Step 3: Cross multiply
    20,363.40x = 30,538.22 × 7,213.86
  4. Step 4: Simplify right side
    20,363.40x = 220,298,407.66
  5. Step 5: Solve for x
    x = 220,298,407.66/20,363.40
  6. Step 6: Final answer
    x = 10,818.35

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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.