Home / 39,782.16-59,660.61-13,480.74

Finding the Fourth Proportional to 39,782.16, 59,660.61 and 13,480.74

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Solution

The fourth proportional to 39,782.16, 59,660.61 and 13,480.74 is: 20,216.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,782.16 : 59,660.61 = 13,480.74 : x
  2. Step 2: Convert to fraction form
    39,782.16/59,660.61 = 13,480.74/x
  3. Step 3: Cross multiply
    39,782.16x = 59,660.61 × 13,480.74
  4. Step 4: Simplify right side
    39,782.16x = 804,269,171.65
  5. Step 5: Solve for x
    x = 804,269,171.65/39,782.16
  6. Step 6: Final answer
    x = 20,216.83

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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.