Home / 21,429.15-32,145.84-7,387.33

Finding the Fourth Proportional to 21,429.15, 32,145.84 and 7,387.33

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Solution

The fourth proportional to 21,429.15, 32,145.84 and 7,387.33 is: 11,081.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,429.15 : 32,145.84 = 7,387.33 : x
  2. Step 2: Convert to fraction form
    21,429.15/32,145.84 = 7,387.33/x
  3. Step 3: Cross multiply
    21,429.15x = 32,145.84 × 7,387.33
  4. Step 4: Simplify right side
    21,429.15x = 237,471,847.84
  5. Step 5: Solve for x
    x = 237,471,847.84/21,429.15
  6. Step 6: Final answer
    x = 11,081.72

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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.