Home / 12,278.87-16,940.39-8,032.35

Finding the Fourth Proportional to 12,278.87, 16,940.39 and 8,032.35

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Solution

The fourth proportional to 12,278.87, 16,940.39 and 8,032.35 is: 11,081.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278.87 : 16,940.39 = 8,032.35 : x
  2. Step 2: Convert to fraction form
    12,278.87/16,940.39 = 8,032.35/x
  3. Step 3: Cross multiply
    12,278.87x = 16,940.39 × 8,032.35
  4. Step 4: Simplify right side
    12,278.87x = 136,071,141.62
  5. Step 5: Solve for x
    x = 136,071,141.62/12,278.87
  6. Step 6: Final answer
    x = 11,081.74

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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.