Home / 10,391.35-14,339.83-5,675.65

Finding the Fourth Proportional to 10,391.35, 14,339.83 and 5,675.65

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Solution

The fourth proportional to 10,391.35, 14,339.83 and 5,675.65 is: 7,832.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,391.35 : 14,339.83 = 5,675.65 : x
  2. Step 2: Convert to fraction form
    10,391.35/14,339.83 = 5,675.65/x
  3. Step 3: Cross multiply
    10,391.35x = 14,339.83 × 5,675.65
  4. Step 4: Simplify right side
    10,391.35x = 81,387,856.14
  5. Step 5: Solve for x
    x = 81,387,856.14/10,391.35
  6. Step 6: Final answer
    x = 7,832.27

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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.