Home / 12,818.40-19,195.20-8,124.12

Finding the Fourth Proportional to 12,818.40, 19,195.20 and 8,124.12

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Solution

The fourth proportional to 12,818.40, 19,195.20 and 8,124.12 is: 12,165.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,818.40 : 19,195.20 = 8,124.12 : x
  2. Step 2: Convert to fraction form
    12,818.40/19,195.20 = 8,124.12/x
  3. Step 3: Cross multiply
    12,818.40x = 19,195.20 × 8,124.12
  4. Step 4: Simplify right side
    12,818.40x = 155,944,108.22
  5. Step 5: Solve for x
    x = 155,944,108.22/12,818.40
  6. Step 6: Final answer
    x = 12,165.65

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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.