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Finding the Fourth Proportional to 12,773.40, 17,638.40 and 8,593.80

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Solution

The fourth proportional to 12,773.40, 17,638.40 and 8,593.80 is: 11,866.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,773.40 : 17,638.40 = 8,593.80 : x
  2. Step 2: Convert to fraction form
    12,773.40/17,638.40 = 8,593.80/x
  3. Step 3: Cross multiply
    12,773.40x = 17,638.40 × 8,593.80
  4. Step 4: Simplify right side
    12,773.40x = 151,580,881.92
  5. Step 5: Solve for x
    x = 151,580,881.92/12,773.40
  6. Step 6: Final answer
    x = 11,866.92

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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.