Home / 12,942.21-19,446.12-8,264.46

Finding the Fourth Proportional to 12,942.21, 19,446.12 and 8,264.46

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Solution

The fourth proportional to 12,942.21, 19,446.12 and 8,264.46 is: 12,417.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942.21 : 19,446.12 = 8,264.46 : x
  2. Step 2: Convert to fraction form
    12,942.21/19,446.12 = 8,264.46/x
  3. Step 3: Cross multiply
    12,942.21x = 19,446.12 × 8,264.46
  4. Step 4: Simplify right side
    12,942.21x = 160,711,680.90
  5. Step 5: Solve for x
    x = 160,711,680.90/12,942.21
  6. Step 6: Final answer
    x = 12,417.64

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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.