Home / 15,710.33-21,680.39-8,636.60

Finding the Fourth Proportional to 15,710.33, 21,680.39 and 8,636.60

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Solution

The fourth proportional to 15,710.33, 21,680.39 and 8,636.60 is: 11,918.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,710.33 : 21,680.39 = 8,636.60 : x
  2. Step 2: Convert to fraction form
    15,710.33/21,680.39 = 8,636.60/x
  3. Step 3: Cross multiply
    15,710.33x = 21,680.39 × 8,636.60
  4. Step 4: Simplify right side
    15,710.33x = 187,244,856.27
  5. Step 5: Solve for x
    x = 187,244,856.27/15,710.33
  6. Step 6: Final answer
    x = 11,918.58

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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.