Home / 20,116.42-30,184.34-8,278.92

Finding the Fourth Proportional to 20,116.42, 30,184.34 and 8,278.92

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Solution

The fourth proportional to 20,116.42, 30,184.34 and 8,278.92 is: 12,422.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,116.42 : 30,184.34 = 8,278.92 : x
  2. Step 2: Convert to fraction form
    20,116.42/30,184.34 = 8,278.92/x
  3. Step 3: Cross multiply
    20,116.42x = 30,184.34 × 8,278.92
  4. Step 4: Simplify right side
    20,116.42x = 249,893,736.11
  5. Step 5: Solve for x
    x = 249,893,736.11/20,116.42
  6. Step 6: Final answer
    x = 12,422.38

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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.