Home / 15,219.33-21,000.76-8,504.70

Finding the Fourth Proportional to 15,219.33, 21,000.76 and 8,504.70

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Solution

The fourth proportional to 15,219.33, 21,000.76 and 8,504.70 is: 11,735.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,219.33 : 21,000.76 = 8,504.70 : x
  2. Step 2: Convert to fraction form
    15,219.33/21,000.76 = 8,504.70/x
  3. Step 3: Cross multiply
    15,219.33x = 21,000.76 × 8,504.70
  4. Step 4: Simplify right side
    15,219.33x = 178,605,163.57
  5. Step 5: Solve for x
    x = 178,605,163.57/15,219.33
  6. Step 6: Final answer
    x = 11,735.42

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Double scale
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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.