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Finding the Fourth Proportional to 13,092.88, 18,073.44 and 8,903.68

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Solution

The fourth proportional to 13,092.88, 18,073.44 and 8,903.68 is: 12,290.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,092.88 : 18,073.44 = 8,903.68 : x
  2. Step 2: Convert to fraction form
    13,092.88/18,073.44 = 8,903.68/x
  3. Step 3: Cross multiply
    13,092.88x = 18,073.44 × 8,903.68
  4. Step 4: Simplify right side
    13,092.88x = 160,920,126.26
  5. Step 5: Solve for x
    x = 160,920,126.26/13,092.88
  6. Step 6: Final answer
    x = 12,290.66

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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.