Home / 21,022.74-31,532.90-7,874.01

Finding the Fourth Proportional to 21,022.74, 31,532.90 and 7,874.01

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Solution

The fourth proportional to 21,022.74, 31,532.90 and 7,874.01 is: 11,810.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022.74 : 31,532.90 = 7,874.01 : x
  2. Step 2: Convert to fraction form
    21,022.74/31,532.90 = 7,874.01/x
  3. Step 3: Cross multiply
    21,022.74x = 31,532.90 × 7,874.01
  4. Step 4: Simplify right side
    21,022.74x = 248,290,330.56
  5. Step 5: Solve for x
    x = 248,290,330.56/21,022.74
  6. Step 6: Final answer
    x = 11,810.56

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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.