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Finding the Fourth Proportional to 21,732.96, 29,991 and 12,301.32

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Solution

The fourth proportional to 21,732.96, 29,991 and 12,301.32 is: 16,975.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,732.96 : 29,991 = 12,301.32 : x
  2. Step 2: Convert to fraction form
    21,732.96/29,991 = 12,301.32/x
  3. Step 3: Cross multiply
    21,732.96x = 29,991 × 12,301.32
  4. Step 4: Simplify right side
    21,732.96x = 368,928,888.12
  5. Step 5: Solve for x
    x = 368,928,888.12/21,732.96
  6. Step 6: Final answer
    x = 16,975.55

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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.