Home / 10,222.79-15,318.96-5,285.84

Finding the Fourth Proportional to 10,222.79, 15,318.96 and 5,285.84

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Solution

The fourth proportional to 10,222.79, 15,318.96 and 5,285.84 is: 7,920.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,222.79 : 15,318.96 = 5,285.84 : x
  2. Step 2: Convert to fraction form
    10,222.79/15,318.96 = 5,285.84/x
  3. Step 3: Cross multiply
    10,222.79x = 15,318.96 × 5,285.84
  4. Step 4: Simplify right side
    10,222.79x = 80,973,494.93
  5. Step 5: Solve for x
    x = 80,973,494.93/10,222.79
  6. Step 6: Final answer
    x = 7,920.88

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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.