Home / 13,134.73-18,118.90-8,880.20

Finding the Fourth Proportional to 13,134.73, 18,118.90 and 8,880.20

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Solution

The fourth proportional to 13,134.73, 18,118.90 and 8,880.20 is: 12,249.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.73 : 18,118.90 = 8,880.20 : x
  2. Step 2: Convert to fraction form
    13,134.73/18,118.90 = 8,880.20/x
  3. Step 3: Cross multiply
    13,134.73x = 18,118.90 × 8,880.20
  4. Step 4: Simplify right side
    13,134.73x = 160,899,455.78
  5. Step 5: Solve for x
    x = 160,899,455.78/13,134.73
  6. Step 6: Final answer
    x = 12,249.92

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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.