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Finding the Fourth Proportional to 14,292.56, 19,723.70 and 7,919.17

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Solution

The fourth proportional to 14,292.56, 19,723.70 and 7,919.17 is: 10,928.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,292.56 : 19,723.70 = 7,919.17 : x
  2. Step 2: Convert to fraction form
    14,292.56/19,723.70 = 7,919.17/x
  3. Step 3: Cross multiply
    14,292.56x = 19,723.70 × 7,919.17
  4. Step 4: Simplify right side
    14,292.56x = 156,195,244.42
  5. Step 5: Solve for x
    x = 156,195,244.42/14,292.56
  6. Step 6: Final answer
    x = 10,928.43

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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.