Home / 13,641.53-20,341.82-11,982.45

Finding the Fourth Proportional to 13,641.53, 20,341.82 and 11,982.45

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Solution

The fourth proportional to 13,641.53, 20,341.82 and 11,982.45 is: 17,867.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,641.53 : 20,341.82 = 11,982.45 : x
  2. Step 2: Convert to fraction form
    13,641.53/20,341.82 = 11,982.45/x
  3. Step 3: Cross multiply
    13,641.53x = 20,341.82 × 11,982.45
  4. Step 4: Simplify right side
    13,641.53x = 243,744,841.06
  5. Step 5: Solve for x
    x = 243,744,841.06/13,641.53
  6. Step 6: Final answer
    x = 17,867.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.