Home / 28,122.86-38,812.38-16,186.70

Finding the Fourth Proportional to 28,122.86, 38,812.38 and 16,186.70

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Solution

The fourth proportional to 28,122.86, 38,812.38 and 16,186.70 is: 22,339.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,122.86 : 38,812.38 = 16,186.70 : x
  2. Step 2: Convert to fraction form
    28,122.86/38,812.38 = 16,186.70/x
  3. Step 3: Cross multiply
    28,122.86x = 38,812.38 × 16,186.70
  4. Step 4: Simplify right side
    28,122.86x = 628,244,351.35
  5. Step 5: Solve for x
    x = 628,244,351.35/28,122.86
  6. Step 6: Final answer
    x = 22,339.28

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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.