Home / 13,034.91-18,002.96-8,778.58

Finding the Fourth Proportional to 13,034.91, 18,002.96 and 8,778.58

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Solution

The fourth proportional to 13,034.91, 18,002.96 and 8,778.58 is: 12,124.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,034.91 : 18,002.96 = 8,778.58 : x
  2. Step 2: Convert to fraction form
    13,034.91/18,002.96 = 8,778.58/x
  3. Step 3: Cross multiply
    13,034.91x = 18,002.96 × 8,778.58
  4. Step 4: Simplify right side
    13,034.91x = 158,040,424.60
  5. Step 5: Solve for x
    x = 158,040,424.60/13,034.91
  6. Step 6: Final answer
    x = 12,124.40

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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.