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Finding the Fourth Proportional to 21,509.81, 32,252.15 and 8,346.81

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Solution

The fourth proportional to 21,509.81, 32,252.15 and 8,346.81 is: 12,515.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,509.81 : 32,252.15 = 8,346.81 : x
  2. Step 2: Convert to fraction form
    21,509.81/32,252.15 = 8,346.81/x
  3. Step 3: Cross multiply
    21,509.81x = 32,252.15 × 8,346.81
  4. Step 4: Simplify right side
    21,509.81x = 269,202,568.14
  5. Step 5: Solve for x
    x = 269,202,568.14/21,509.81
  6. Step 6: Final answer
    x = 12,515.34

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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.