Home / 13,151.11-18,160.65-8,443.60

Finding the Fourth Proportional to 13,151.11, 18,160.65 and 8,443.60

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Solution

The fourth proportional to 13,151.11, 18,160.65 and 8,443.60 is: 11,659.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.11 : 18,160.65 = 8,443.60 : x
  2. Step 2: Convert to fraction form
    13,151.11/18,160.65 = 8,443.60/x
  3. Step 3: Cross multiply
    13,151.11x = 18,160.65 × 8,443.60
  4. Step 4: Simplify right side
    13,151.11x = 153,341,264.34
  5. Step 5: Solve for x
    x = 153,341,264.34/13,151.11
  6. Step 6: Final answer
    x = 11,659.95

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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.