Home / 21,621.99-32,374.56-11,211.87

Finding the Fourth Proportional to 21,621.99, 32,374.56 and 11,211.87

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Solution

The fourth proportional to 21,621.99, 32,374.56 and 11,211.87 is: 16,787.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,621.99 : 32,374.56 = 11,211.87 : x
  2. Step 2: Convert to fraction form
    21,621.99/32,374.56 = 11,211.87/x
  3. Step 3: Cross multiply
    21,621.99x = 32,374.56 × 11,211.87
  4. Step 4: Simplify right side
    21,621.99x = 362,979,358.03
  5. Step 5: Solve for x
    x = 362,979,358.03/21,621.99
  6. Step 6: Final answer
    x = 16,787.51

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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.