Home / 21,399.28-32,089.74-7,360.72

Finding the Fourth Proportional to 21,399.28, 32,089.74 and 7,360.72

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Solution

The fourth proportional to 21,399.28, 32,089.74 and 7,360.72 is: 11,037.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,399.28 : 32,089.74 = 7,360.72 : x
  2. Step 2: Convert to fraction form
    21,399.28/32,089.74 = 7,360.72/x
  3. Step 3: Cross multiply
    21,399.28x = 32,089.74 × 7,360.72
  4. Step 4: Simplify right side
    21,399.28x = 236,203,591.01
  5. Step 5: Solve for x
    x = 236,203,591.01/21,399.28
  6. Step 6: Final answer
    x = 11,037.92

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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.