Home / 15,161.18-20,922.12-8,447.36

Finding the Fourth Proportional to 15,161.18, 20,922.12 and 8,447.36

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Solution

The fourth proportional to 15,161.18, 20,922.12 and 8,447.36 is: 11,657.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,161.18 : 20,922.12 = 8,447.36 : x
  2. Step 2: Convert to fraction form
    15,161.18/20,922.12 = 8,447.36/x
  3. Step 3: Cross multiply
    15,161.18x = 20,922.12 × 8,447.36
  4. Step 4: Simplify right side
    15,161.18x = 176,736,679.60
  5. Step 5: Solve for x
    x = 176,736,679.60/15,161.18
  6. Step 6: Final answer
    x = 11,657.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.