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Finding the Fourth Proportional to 21,765.57, 32,650.71 and 9,286.92

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Solution

The fourth proportional to 21,765.57, 32,650.71 and 9,286.92 is: 13,931.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,765.57 : 32,650.71 = 9,286.92 : x
  2. Step 2: Convert to fraction form
    21,765.57/32,650.71 = 9,286.92/x
  3. Step 3: Cross multiply
    21,765.57x = 32,650.71 × 9,286.92
  4. Step 4: Simplify right side
    21,765.57x = 303,224,531.71
  5. Step 5: Solve for x
    x = 303,224,531.71/21,765.57
  6. Step 6: Final answer
    x = 13,931.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.