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Finding the Fourth Proportional to 21,334.16, 32,001 and 9,639.20

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Solution

The fourth proportional to 21,334.16, 32,001 and 9,639.20 is: 14,458.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,334.16 : 32,001 = 9,639.20 : x
  2. Step 2: Convert to fraction form
    21,334.16/32,001 = 9,639.20/x
  3. Step 3: Cross multiply
    21,334.16x = 32,001 × 9,639.20
  4. Step 4: Simplify right side
    21,334.16x = 308,464,039.20
  5. Step 5: Solve for x
    x = 308,464,039.20/21,334.16
  6. Step 6: Final answer
    x = 14,458.69

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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.