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Finding the Fourth Proportional to 19,479.87, 26,883.87 and 10,983.63

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Solution

The fourth proportional to 19,479.87, 26,883.87 and 10,983.63 is: 15,158.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,479.87 : 26,883.87 = 10,983.63 : x
  2. Step 2: Convert to fraction form
    19,479.87/26,883.87 = 10,983.63/x
  3. Step 3: Cross multiply
    19,479.87x = 26,883.87 × 10,983.63
  4. Step 4: Simplify right side
    19,479.87x = 295,282,481.05
  5. Step 5: Solve for x
    x = 295,282,481.05/19,479.87
  6. Step 6: Final answer
    x = 15,158.34

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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.