Home / 15,835.43-21,855.20-9,119.75

Finding the Fourth Proportional to 15,835.43, 21,855.20 and 9,119.75

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Solution

The fourth proportional to 15,835.43, 21,855.20 and 9,119.75 is: 12,586.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,835.43 : 21,855.20 = 9,119.75 : x
  2. Step 2: Convert to fraction form
    15,835.43/21,855.20 = 9,119.75/x
  3. Step 3: Cross multiply
    15,835.43x = 21,855.20 × 9,119.75
  4. Step 4: Simplify right side
    15,835.43x = 199,313,873.72
  5. Step 5: Solve for x
    x = 199,313,873.72/15,835.43
  6. Step 6: Final answer
    x = 12,586.58

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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.