Home / 13,210.62-18,228.42-8,180.52

Finding the Fourth Proportional to 13,210.62, 18,228.42 and 8,180.52

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Solution

The fourth proportional to 13,210.62, 18,228.42 and 8,180.52 is: 11,287.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.62 : 18,228.42 = 8,180.52 : x
  2. Step 2: Convert to fraction form
    13,210.62/18,228.42 = 8,180.52/x
  3. Step 3: Cross multiply
    13,210.62x = 18,228.42 × 8,180.52
  4. Step 4: Simplify right side
    13,210.62x = 149,117,954.38
  5. Step 5: Solve for x
    x = 149,117,954.38/13,210.62
  6. Step 6: Final answer
    x = 11,287.73

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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.