Home / 19,939.16-29,908.97-8,539.55

Finding the Fourth Proportional to 19,939.16, 29,908.97 and 8,539.55

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Solution

The fourth proportional to 19,939.16, 29,908.97 and 8,539.55 is: 12,809.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,939.16 : 29,908.97 = 8,539.55 : x
  2. Step 2: Convert to fraction form
    19,939.16/29,908.97 = 8,539.55/x
  3. Step 3: Cross multiply
    19,939.16x = 29,908.97 × 8,539.55
  4. Step 4: Simplify right side
    19,939.16x = 255,409,016.57
  5. Step 5: Solve for x
    x = 255,409,016.57/19,939.16
  6. Step 6: Final answer
    x = 12,809.42

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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.