Home / 13,175.86-18,182.70-9,821.62

Finding the Fourth Proportional to 13,175.86, 18,182.70 and 9,821.62

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Solution

The fourth proportional to 13,175.86, 18,182.70 and 9,821.62 is: 13,553.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,175.86 : 18,182.70 = 9,821.62 : x
  2. Step 2: Convert to fraction form
    13,175.86/18,182.70 = 9,821.62/x
  3. Step 3: Cross multiply
    13,175.86x = 18,182.70 × 9,821.62
  4. Step 4: Simplify right side
    13,175.86x = 178,583,569.97
  5. Step 5: Solve for x
    x = 178,583,569.97/13,175.86
  6. Step 6: Final answer
    x = 13,553.85

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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.