Home / 21,621.28-32,446.34-7,581.29

Finding the Fourth Proportional to 21,621.28, 32,446.34 and 7,581.29

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Solution

The fourth proportional to 21,621.28, 32,446.34 and 7,581.29 is: 11,376.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,621.28 : 32,446.34 = 7,581.29 : x
  2. Step 2: Convert to fraction form
    21,621.28/32,446.34 = 7,581.29/x
  3. Step 3: Cross multiply
    21,621.28x = 32,446.34 × 7,581.29
  4. Step 4: Simplify right side
    21,621.28x = 245,985,112.98
  5. Step 5: Solve for x
    x = 245,985,112.98/21,621.28
  6. Step 6: Final answer
    x = 11,376.99

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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.