Home / 18,816.30-28,222.47-7,724.16

Finding the Fourth Proportional to 18,816.30, 28,222.47 and 7,724.16

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Solution

The fourth proportional to 18,816.30, 28,222.47 and 7,724.16 is: 11,585.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,816.30 : 28,222.47 = 7,724.16 : x
  2. Step 2: Convert to fraction form
    18,816.30/28,222.47 = 7,724.16/x
  3. Step 3: Cross multiply
    18,816.30x = 28,222.47 × 7,724.16
  4. Step 4: Simplify right side
    18,816.30x = 217,994,873.88
  5. Step 5: Solve for x
    x = 217,994,873.88/18,816.30
  6. Step 6: Final answer
    x = 11,585.43

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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.