Home / 39,650.32-59,481.14-12,990.61

Finding the Fourth Proportional to 39,650.32, 59,481.14 and 12,990.61

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Solution

The fourth proportional to 39,650.32, 59,481.14 and 12,990.61 is: 19,487.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,650.32 : 59,481.14 = 12,990.61 : x
  2. Step 2: Convert to fraction form
    39,650.32/59,481.14 = 12,990.61/x
  3. Step 3: Cross multiply
    39,650.32x = 59,481.14 × 12,990.61
  4. Step 4: Simplify right side
    39,650.32x = 772,696,500.81
  5. Step 5: Solve for x
    x = 772,696,500.81/39,650.32
  6. Step 6: Final answer
    x = 19,487.77

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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.