Home / 13,660.20-18,851.34-8,282.58

Finding the Fourth Proportional to 13,660.20, 18,851.34 and 8,282.58

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Solution

The fourth proportional to 13,660.20, 18,851.34 and 8,282.58 is: 11,430.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,660.20 : 18,851.34 = 8,282.58 : x
  2. Step 2: Convert to fraction form
    13,660.20/18,851.34 = 8,282.58/x
  3. Step 3: Cross multiply
    13,660.20x = 18,851.34 × 8,282.58
  4. Step 4: Simplify right side
    13,660.20x = 156,137,731.66
  5. Step 5: Solve for x
    x = 156,137,731.66/13,660.20
  6. Step 6: Final answer
    x = 11,430.12

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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.