Home / 21,868.38-32,777.93-8,705.41

Finding the Fourth Proportional to 21,868.38, 32,777.93 and 8,705.41

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Solution

The fourth proportional to 21,868.38, 32,777.93 and 8,705.41 is: 13,048.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,868.38 : 32,777.93 = 8,705.41 : x
  2. Step 2: Convert to fraction form
    21,868.38/32,777.93 = 8,705.41/x
  3. Step 3: Cross multiply
    21,868.38x = 32,777.93 × 8,705.41
  4. Step 4: Simplify right side
    21,868.38x = 285,345,259.42
  5. Step 5: Solve for x
    x = 285,345,259.42/21,868.38
  6. Step 6: Final answer
    x = 13,048.30

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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.