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Finding the Fourth Proportional to 12,844.50, 17,726.85 and 7,255.86

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Solution

The fourth proportional to 12,844.50, 17,726.85 and 7,255.86 is: 10,013.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,844.50 : 17,726.85 = 7,255.86 : x
  2. Step 2: Convert to fraction form
    12,844.50/17,726.85 = 7,255.86/x
  3. Step 3: Cross multiply
    12,844.50x = 17,726.85 × 7,255.86
  4. Step 4: Simplify right side
    12,844.50x = 128,623,541.84
  5. Step 5: Solve for x
    x = 128,623,541.84/12,844.50
  6. Step 6: Final answer
    x = 10,013.90

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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.