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Finding the Fourth Proportional to 14,486.11, 21,729.17 and 7,908.71

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Solution

The fourth proportional to 14,486.11, 21,729.17 and 7,908.71 is: 11,863.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,486.11 : 21,729.17 = 7,908.71 : x
  2. Step 2: Convert to fraction form
    14,486.11/21,729.17 = 7,908.71/x
  3. Step 3: Cross multiply
    14,486.11x = 21,729.17 × 7,908.71
  4. Step 4: Simplify right side
    14,486.11x = 171,849,667.02
  5. Step 5: Solve for x
    x = 171,849,667.02/14,486.11
  6. Step 6: Final answer
    x = 11,863.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.