Home / 20,379.43-30,557.76-10,377.92

Finding the Fourth Proportional to 20,379.43, 30,557.76 and 10,377.92

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Solution

The fourth proportional to 20,379.43, 30,557.76 and 10,377.92 is: 15,561.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,379.43 : 30,557.76 = 10,377.92 : x
  2. Step 2: Convert to fraction form
    20,379.43/30,557.76 = 10,377.92/x
  3. Step 3: Cross multiply
    20,379.43x = 30,557.76 × 10,377.92
  4. Step 4: Simplify right side
    20,379.43x = 317,126,026.14
  5. Step 5: Solve for x
    x = 317,126,026.14/20,379.43
  6. Step 6: Final answer
    x = 15,561.08

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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.