Home / 12,688.92-19,026.39-3,922.71

Finding the Fourth Proportional to 12,688.92, 19,026.39 and 3,922.71

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Solution

The fourth proportional to 12,688.92, 19,026.39 and 3,922.71 is: 5,881.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.92 : 19,026.39 = 3,922.71 : x
  2. Step 2: Convert to fraction form
    12,688.92/19,026.39 = 3,922.71/x
  3. Step 3: Cross multiply
    12,688.92x = 19,026.39 × 3,922.71
  4. Step 4: Simplify right side
    12,688.92x = 74,635,010.32
  5. Step 5: Solve for x
    x = 74,635,010.32/12,688.92
  6. Step 6: Final answer
    x = 5,881.90

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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.