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Finding the Fourth Proportional to 18,863.49, 28,408.09 and 17,182.01

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Solution

The fourth proportional to 18,863.49, 28,408.09 and 17,182.01 is: 25,875.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863.49 : 28,408.09 = 17,182.01 : x
  2. Step 2: Convert to fraction form
    18,863.49/28,408.09 = 17,182.01/x
  3. Step 3: Cross multiply
    18,863.49x = 28,408.09 × 17,182.01
  4. Step 4: Simplify right side
    18,863.49x = 488,108,086.46
  5. Step 5: Solve for x
    x = 488,108,086.46/18,863.49
  6. Step 6: Final answer
    x = 25,875.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.