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Finding the Fourth Proportional to 12,887.87, 19,339.24 and 6,964.77

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Solution

The fourth proportional to 12,887.87, 19,339.24 and 6,964.77 is: 10,451.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.87 : 19,339.24 = 6,964.77 : x
  2. Step 2: Convert to fraction form
    12,887.87/19,339.24 = 6,964.77/x
  3. Step 3: Cross multiply
    12,887.87x = 19,339.24 × 6,964.77
  4. Step 4: Simplify right side
    12,887.87x = 134,693,227.05
  5. Step 5: Solve for x
    x = 134,693,227.05/12,887.87
  6. Step 6: Final answer
    x = 10,451.16

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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.