Home / 39,785.48-59,623.85-21,989.78

Finding the Fourth Proportional to 39,785.48, 59,623.85 and 21,989.78

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Solution

The fourth proportional to 39,785.48, 59,623.85 and 21,989.78 is: 32,954.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,785.48 : 59,623.85 = 21,989.78 : x
  2. Step 2: Convert to fraction form
    39,785.48/59,623.85 = 21,989.78/x
  3. Step 3: Cross multiply
    39,785.48x = 59,623.85 × 21,989.78
  4. Step 4: Simplify right side
    39,785.48x = 1,311,115,201.01
  5. Step 5: Solve for x
    x = 1,311,115,201.01/39,785.48
  6. Step 6: Final answer
    x = 32,954.62

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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.