Home / 10,529.12-15,782.70-4,286.42

Finding the Fourth Proportional to 10,529.12, 15,782.70 and 4,286.42

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Solution

The fourth proportional to 10,529.12, 15,782.70 and 4,286.42 is: 6,425.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,529.12 : 15,782.70 = 4,286.42 : x
  2. Step 2: Convert to fraction form
    10,529.12/15,782.70 = 4,286.42/x
  3. Step 3: Cross multiply
    10,529.12x = 15,782.70 × 4,286.42
  4. Step 4: Simplify right side
    10,529.12x = 67,651,280.93
  5. Step 5: Solve for x
    x = 67,651,280.93/10,529.12
  6. Step 6: Final answer
    x = 6,425.16

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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.