Home / 28,144.92-38,839.70-15,397.98

Finding the Fourth Proportional to 28,144.92, 38,839.70 and 15,397.98

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Solution

The fourth proportional to 28,144.92, 38,839.70 and 15,397.98 is: 21,249.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,144.92 : 38,839.70 = 15,397.98 : x
  2. Step 2: Convert to fraction form
    28,144.92/38,839.70 = 15,397.98/x
  3. Step 3: Cross multiply
    28,144.92x = 38,839.70 × 15,397.98
  4. Step 4: Simplify right side
    28,144.92x = 598,052,923.81
  5. Step 5: Solve for x
    x = 598,052,923.81/28,144.92
  6. Step 6: Final answer
    x = 21,249.05

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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.