Home / 21,898.09-32,871.75-8,759.71

Finding the Fourth Proportional to 21,898.09, 32,871.75 and 8,759.71

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Solution

The fourth proportional to 21,898.09, 32,871.75 and 8,759.71 is: 13,149.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,898.09 : 32,871.75 = 8,759.71 : x
  2. Step 2: Convert to fraction form
    21,898.09/32,871.75 = 8,759.71/x
  3. Step 3: Cross multiply
    21,898.09x = 32,871.75 × 8,759.71
  4. Step 4: Simplify right side
    21,898.09x = 287,946,997.19
  5. Step 5: Solve for x
    x = 287,946,997.19/21,898.09
  6. Step 6: Final answer
    x = 13,149.41

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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.