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Finding the Fourth Proportional to 14,691.36, 20,275.44 and 10,919.18

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Solution

The fourth proportional to 14,691.36, 20,275.44 and 10,919.18 is: 15,069.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,691.36 : 20,275.44 = 10,919.18 : x
  2. Step 2: Convert to fraction form
    14,691.36/20,275.44 = 10,919.18/x
  3. Step 3: Cross multiply
    14,691.36x = 20,275.44 × 10,919.18
  4. Step 4: Simplify right side
    14,691.36x = 221,391,178.94
  5. Step 5: Solve for x
    x = 221,391,178.94/14,691.36
  6. Step 6: Final answer
    x = 15,069.48

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.