Home / 20,340.42-30,487.20-7,854.94

Finding the Fourth Proportional to 20,340.42, 30,487.20 and 7,854.94

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Solution

The fourth proportional to 20,340.42, 30,487.20 and 7,854.94 is: 11,773.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,340.42 : 30,487.20 = 7,854.94 : x
  2. Step 2: Convert to fraction form
    20,340.42/30,487.20 = 7,854.94/x
  3. Step 3: Cross multiply
    20,340.42x = 30,487.20 × 7,854.94
  4. Step 4: Simplify right side
    20,340.42x = 239,475,126.77
  5. Step 5: Solve for x
    x = 239,475,126.77/20,340.42
  6. Step 6: Final answer
    x = 11,773.36

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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.