Home / 20,416.10-28,170.38-11,463.07

Finding the Fourth Proportional to 20,416.10, 28,170.38 and 11,463.07

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Solution

The fourth proportional to 20,416.10, 28,170.38 and 11,463.07 is: 15,816.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,416.10 : 28,170.38 = 11,463.07 : x
  2. Step 2: Convert to fraction form
    20,416.10/28,170.38 = 11,463.07/x
  3. Step 3: Cross multiply
    20,416.10x = 28,170.38 × 11,463.07
  4. Step 4: Simplify right side
    20,416.10x = 322,919,048.92
  5. Step 5: Solve for x
    x = 322,919,048.92/20,416.10
  6. Step 6: Final answer
    x = 15,816.88

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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.