Home / 13,987.31-20,995.55-6,201.59

Finding the Fourth Proportional to 13,987.31, 20,995.55 and 6,201.59

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Solution

The fourth proportional to 13,987.31, 20,995.55 and 6,201.59 is: 9,308.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.31 : 20,995.55 = 6,201.59 : x
  2. Step 2: Convert to fraction form
    13,987.31/20,995.55 = 6,201.59/x
  3. Step 3: Cross multiply
    13,987.31x = 20,995.55 × 6,201.59
  4. Step 4: Simplify right side
    13,987.31x = 130,205,761.92
  5. Step 5: Solve for x
    x = 130,205,761.92/13,987.31
  6. Step 6: Final answer
    x = 9,308.85

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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.