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Finding the Fourth Proportional to 21,677.49, 29,800.10 and 18,641.48

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Solution

The fourth proportional to 21,677.49, 29,800.10 and 18,641.48 is: 25,626.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,677.49 : 29,800.10 = 18,641.48 : x
  2. Step 2: Convert to fraction form
    21,677.49/29,800.10 = 18,641.48/x
  3. Step 3: Cross multiply
    21,677.49x = 29,800.10 × 18,641.48
  4. Step 4: Simplify right side
    21,677.49x = 555,517,865.75
  5. Step 5: Solve for x
    x = 555,517,865.75/21,677.49
  6. Step 6: Final answer
    x = 25,626.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.