Home / 13,701.13-18,907.55-8,112.13

Finding the Fourth Proportional to 13,701.13, 18,907.55 and 8,112.13

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Solution

The fourth proportional to 13,701.13, 18,907.55 and 8,112.13 is: 11,194.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,701.13 : 18,907.55 = 8,112.13 : x
  2. Step 2: Convert to fraction form
    13,701.13/18,907.55 = 8,112.13/x
  3. Step 3: Cross multiply
    13,701.13x = 18,907.55 × 8,112.13
  4. Step 4: Simplify right side
    13,701.13x = 153,380,503.58
  5. Step 5: Solve for x
    x = 153,380,503.58/13,701.13
  6. Step 6: Final answer
    x = 11,194.73

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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.