Home / 12,981.87-19,473.21-4,097.28

Finding the Fourth Proportional to 12,981.87, 19,473.21 and 4,097.28

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Solution

The fourth proportional to 12,981.87, 19,473.21 and 4,097.28 is: 6,146.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981.87 : 19,473.21 = 4,097.28 : x
  2. Step 2: Convert to fraction form
    12,981.87/19,473.21 = 4,097.28/x
  3. Step 3: Cross multiply
    12,981.87x = 19,473.21 × 4,097.28
  4. Step 4: Simplify right side
    12,981.87x = 79,787,193.87
  5. Step 5: Solve for x
    x = 79,787,193.87/12,981.87
  6. Step 6: Final answer
    x = 6,146.05

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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.