Home / 13,161.20-19,746.40-8,225.04

Finding the Fourth Proportional to 13,161.20, 19,746.40 and 8,225.04

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Solution

The fourth proportional to 13,161.20, 19,746.40 and 8,225.04 is: 12,340.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.20 : 19,746.40 = 8,225.04 : x
  2. Step 2: Convert to fraction form
    13,161.20/19,746.40 = 8,225.04/x
  3. Step 3: Cross multiply
    13,161.20x = 19,746.40 × 8,225.04
  4. Step 4: Simplify right side
    13,161.20x = 162,414,929.86
  5. Step 5: Solve for x
    x = 162,414,929.86/13,161.20
  6. Step 6: Final answer
    x = 12,340.43

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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.