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Finding the Fourth Proportional to 13,863.69, 19,134.11 and 10,902.02

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Solution

The fourth proportional to 13,863.69, 19,134.11 and 10,902.02 is: 15,046.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,863.69 : 19,134.11 = 10,902.02 : x
  2. Step 2: Convert to fraction form
    13,863.69/19,134.11 = 10,902.02/x
  3. Step 3: Cross multiply
    13,863.69x = 19,134.11 × 10,902.02
  4. Step 4: Simplify right side
    13,863.69x = 208,600,381.49
  5. Step 5: Solve for x
    x = 208,600,381.49/13,863.69
  6. Step 6: Final answer
    x = 15,046.53

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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.