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Finding the Fourth Proportional to 15,662.22, 21,614.76 and 9,289.26

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Solution

The fourth proportional to 15,662.22, 21,614.76 and 9,289.26 is: 12,819.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,662.22 : 21,614.76 = 9,289.26 : x
  2. Step 2: Convert to fraction form
    15,662.22/21,614.76 = 9,289.26/x
  3. Step 3: Cross multiply
    15,662.22x = 21,614.76 × 9,289.26
  4. Step 4: Simplify right side
    15,662.22x = 200,785,125.48
  5. Step 5: Solve for x
    x = 200,785,125.48/15,662.22
  6. Step 6: Final answer
    x = 12,819.71

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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.