Home / 13,871.67-20,832.56-12,759.11

Finding the Fourth Proportional to 13,871.67, 20,832.56 and 12,759.11

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Solution

The fourth proportional to 13,871.67, 20,832.56 and 12,759.11 is: 19,161.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871.67 : 20,832.56 = 12,759.11 : x
  2. Step 2: Convert to fraction form
    13,871.67/20,832.56 = 12,759.11/x
  3. Step 3: Cross multiply
    13,871.67x = 20,832.56 × 12,759.11
  4. Step 4: Simplify right side
    13,871.67x = 265,804,756.66
  5. Step 5: Solve for x
    x = 265,804,756.66/13,871.67
  6. Step 6: Final answer
    x = 19,161.70

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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.