Home / 28,724.24-39,638.89-15,976.99

Finding the Fourth Proportional to 28,724.24, 39,638.89 and 15,976.99

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Solution

The fourth proportional to 28,724.24, 39,638.89 and 15,976.99 is: 22,047.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,724.24 : 39,638.89 = 15,976.99 : x
  2. Step 2: Convert to fraction form
    28,724.24/39,638.89 = 15,976.99/x
  3. Step 3: Cross multiply
    28,724.24x = 39,638.89 × 15,976.99
  4. Step 4: Simplify right side
    28,724.24x = 633,310,149.14
  5. Step 5: Solve for x
    x = 633,310,149.14/28,724.24
  6. Step 6: Final answer
    x = 22,047.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.