Home / 13,155.63-18,148.02-8,906.85

Finding the Fourth Proportional to 13,155.63, 18,148.02 and 8,906.85

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Solution

The fourth proportional to 13,155.63, 18,148.02 and 8,906.85 is: 12,286.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.63 : 18,148.02 = 8,906.85 : x
  2. Step 2: Convert to fraction form
    13,155.63/18,148.02 = 8,906.85/x
  3. Step 3: Cross multiply
    13,155.63x = 18,148.02 × 8,906.85
  4. Step 4: Simplify right side
    13,155.63x = 161,641,691.94
  5. Step 5: Solve for x
    x = 161,641,691.94/13,155.63
  6. Step 6: Final answer
    x = 12,286.88

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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.