Home / 12,887.80-19,335.30-6,314.20

Finding the Fourth Proportional to 12,887.80, 19,335.30 and 6,314.20

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Solution

The fourth proportional to 12,887.80, 19,335.30 and 6,314.20 is: 9,473.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.80 : 19,335.30 = 6,314.20 : x
  2. Step 2: Convert to fraction form
    12,887.80/19,335.30 = 6,314.20/x
  3. Step 3: Cross multiply
    12,887.80x = 19,335.30 × 6,314.20
  4. Step 4: Simplify right side
    12,887.80x = 122,086,951.26
  5. Step 5: Solve for x
    x = 122,086,951.26/12,887.80
  6. Step 6: Final answer
    x = 9,473.06

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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.