Home / 21,929.74-32,899.16-7,137.42

Finding the Fourth Proportional to 21,929.74, 32,899.16 and 7,137.42

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Solution

The fourth proportional to 21,929.74, 32,899.16 and 7,137.42 is: 10,707.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,929.74 : 32,899.16 = 7,137.42 : x
  2. Step 2: Convert to fraction form
    21,929.74/32,899.16 = 7,137.42/x
  3. Step 3: Cross multiply
    21,929.74x = 32,899.16 × 7,137.42
  4. Step 4: Simplify right side
    21,929.74x = 234,815,017.04
  5. Step 5: Solve for x
    x = 234,815,017.04/21,929.74
  6. Step 6: Final answer
    x = 10,707.61

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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.