Home / 15,346.26-21,178.47-8,632.20

Finding the Fourth Proportional to 15,346.26, 21,178.47 and 8,632.20

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Solution

The fourth proportional to 15,346.26, 21,178.47 and 8,632.20 is: 11,912.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,346.26 : 21,178.47 = 8,632.20 : x
  2. Step 2: Convert to fraction form
    15,346.26/21,178.47 = 8,632.20/x
  3. Step 3: Cross multiply
    15,346.26x = 21,178.47 × 8,632.20
  4. Step 4: Simplify right side
    15,346.26x = 182,816,788.73
  5. Step 5: Solve for x
    x = 182,816,788.73/15,346.26
  6. Step 6: Final answer
    x = 11,912.79

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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.