Home / 15,805.14-21,810.11-8,633.60

Finding the Fourth Proportional to 15,805.14, 21,810.11 and 8,633.60

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Solution

The fourth proportional to 15,805.14, 21,810.11 and 8,633.60 is: 11,913.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,805.14 : 21,810.11 = 8,633.60 : x
  2. Step 2: Convert to fraction form
    15,805.14/21,810.11 = 8,633.60/x
  3. Step 3: Cross multiply
    15,805.14x = 21,810.11 × 8,633.60
  4. Step 4: Simplify right side
    15,805.14x = 188,299,765.70
  5. Step 5: Solve for x
    x = 188,299,765.70/15,805.14
  6. Step 6: Final answer
    x = 11,913.83

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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.