Home / 13,813.47-20,755.31-8,818.28

Finding the Fourth Proportional to 13,813.47, 20,755.31 and 8,818.28

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Solution

The fourth proportional to 13,813.47, 20,755.31 and 8,818.28 is: 13,249.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,813.47 : 20,755.31 = 8,818.28 : x
  2. Step 2: Convert to fraction form
    13,813.47/20,755.31 = 8,818.28/x
  3. Step 3: Cross multiply
    13,813.47x = 20,755.31 × 8,818.28
  4. Step 4: Simplify right side
    13,813.47x = 183,026,168.62
  5. Step 5: Solve for x
    x = 183,026,168.62/13,813.47
  6. Step 6: Final answer
    x = 13,249.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.