Home / 21,905.30-32,867.37-7,118.75

Finding the Fourth Proportional to 21,905.30, 32,867.37 and 7,118.75

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Solution

The fourth proportional to 21,905.30, 32,867.37 and 7,118.75 is: 10,681.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,905.30 : 32,867.37 = 7,118.75 : x
  2. Step 2: Convert to fraction form
    21,905.30/32,867.37 = 7,118.75/x
  3. Step 3: Cross multiply
    21,905.30x = 32,867.37 × 7,118.75
  4. Step 4: Simplify right side
    21,905.30x = 233,974,672.36
  5. Step 5: Solve for x
    x = 233,974,672.36/21,905.30
  6. Step 6: Final answer
    x = 10,681.19

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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.