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Finding the Fourth Proportional to 21,920.86, 32,832.06 and 16,975.54

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Solution

The fourth proportional to 21,920.86, 32,832.06 and 16,975.54 is: 25,425.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,920.86 : 32,832.06 = 16,975.54 : x
  2. Step 2: Convert to fraction form
    21,920.86/32,832.06 = 16,975.54/x
  3. Step 3: Cross multiply
    21,920.86x = 32,832.06 × 16,975.54
  4. Step 4: Simplify right side
    21,920.86x = 557,341,947.81
  5. Step 5: Solve for x
    x = 557,341,947.81/21,920.86
  6. Step 6: Final answer
    x = 25,425.19

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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.