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Finding the Fourth Proportional to 19,998.92, 27,600.16 and 11,503.80

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Solution

The fourth proportional to 19,998.92, 27,600.16 and 11,503.80 is: 15,876.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,998.92 : 27,600.16 = 11,503.80 : x
  2. Step 2: Convert to fraction form
    19,998.92/27,600.16 = 11,503.80/x
  3. Step 3: Cross multiply
    19,998.92x = 27,600.16 × 11,503.80
  4. Step 4: Simplify right side
    19,998.92x = 317,506,720.61
  5. Step 5: Solve for x
    x = 317,506,720.61/19,998.92
  6. Step 6: Final answer
    x = 15,876.19

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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.