Home / 21,965.28-32,947.80-5,325.28

Finding the Fourth Proportional to 21,965.28, 32,947.80 and 5,325.28

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Solution

The fourth proportional to 21,965.28, 32,947.80 and 5,325.28 is: 7,987.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.28 : 32,947.80 = 5,325.28 : x
  2. Step 2: Convert to fraction form
    21,965.28/32,947.80 = 5,325.28/x
  3. Step 3: Cross multiply
    21,965.28x = 32,947.80 × 5,325.28
  4. Step 4: Simplify right side
    21,965.28x = 175,456,260.38
  5. Step 5: Solve for x
    x = 175,456,260.38/21,965.28
  6. Step 6: Final answer
    x = 7,987.89

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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.