Home / 10,554.12-15,830.62-3,979.88

Finding the Fourth Proportional to 10,554.12, 15,830.62 and 3,979.88

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Solution

The fourth proportional to 10,554.12, 15,830.62 and 3,979.88 is: 5,969.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,554.12 : 15,830.62 = 3,979.88 : x
  2. Step 2: Convert to fraction form
    10,554.12/15,830.62 = 3,979.88/x
  3. Step 3: Cross multiply
    10,554.12x = 15,830.62 × 3,979.88
  4. Step 4: Simplify right side
    10,554.12x = 63,003,967.93
  5. Step 5: Solve for x
    x = 63,003,967.93/10,554.12
  6. Step 6: Final answer
    x = 5,969.61

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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.