Home / 12,863.40-17,768.16-8,877.48

Finding the Fourth Proportional to 12,863.40, 17,768.16 and 8,877.48

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Solution

The fourth proportional to 12,863.40, 17,768.16 and 8,877.48 is: 12,262.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,863.40 : 17,768.16 = 8,877.48 : x
  2. Step 2: Convert to fraction form
    12,863.40/17,768.16 = 8,877.48/x
  3. Step 3: Cross multiply
    12,863.40x = 17,768.16 × 8,877.48
  4. Step 4: Simplify right side
    12,863.40x = 157,736,485.04
  5. Step 5: Solve for x
    x = 157,736,485.04/12,863.40
  6. Step 6: Final answer
    x = 12,262.43

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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.