Home / 19,986.75-29,980.13-6,839.24

Finding the Fourth Proportional to 19,986.75, 29,980.13 and 6,839.24

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Solution

The fourth proportional to 19,986.75, 29,980.13 and 6,839.24 is: 10,258.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,986.75 : 29,980.13 = 6,839.24 : x
  2. Step 2: Convert to fraction form
    19,986.75/29,980.13 = 6,839.24/x
  3. Step 3: Cross multiply
    19,986.75x = 29,980.13 × 6,839.24
  4. Step 4: Simplify right side
    19,986.75x = 205,041,120.20
  5. Step 5: Solve for x
    x = 205,041,120.20/19,986.75
  6. Step 6: Final answer
    x = 10,258.85

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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.