Home / 21,918.99-32,860.05-8,764.19

Finding the Fourth Proportional to 21,918.99, 32,860.05 and 8,764.19

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Solution

The fourth proportional to 21,918.99, 32,860.05 and 8,764.19 is: 13,138.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,918.99 : 32,860.05 = 8,764.19 : x
  2. Step 2: Convert to fraction form
    21,918.99/32,860.05 = 8,764.19/x
  3. Step 3: Cross multiply
    21,918.99x = 32,860.05 × 8,764.19
  4. Step 4: Simplify right side
    21,918.99x = 287,991,721.61
  5. Step 5: Solve for x
    x = 287,991,721.61/21,918.99
  6. Step 6: Final answer
    x = 13,138.91

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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.