Home / 12,943.20-17,867.64-9,757.80

Finding the Fourth Proportional to 12,943.20, 17,867.64 and 9,757.80

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Solution

The fourth proportional to 12,943.20, 17,867.64 and 9,757.80 is: 13,470.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,943.20 : 17,867.64 = 9,757.80 : x
  2. Step 2: Convert to fraction form
    12,943.20/17,867.64 = 9,757.80/x
  3. Step 3: Cross multiply
    12,943.20x = 17,867.64 × 9,757.80
  4. Step 4: Simplify right side
    12,943.20x = 174,348,768.25
  5. Step 5: Solve for x
    x = 174,348,768.25/12,943.20
  6. Step 6: Final answer
    x = 13,470.29

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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.