Home / 21,023.62-31,531.47-7,873.18

Finding the Fourth Proportional to 21,023.62, 31,531.47 and 7,873.18

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Solution

The fourth proportional to 21,023.62, 31,531.47 and 7,873.18 is: 11,808.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,023.62 : 31,531.47 = 7,873.18 : x
  2. Step 2: Convert to fraction form
    21,023.62/31,531.47 = 7,873.18/x
  3. Step 3: Cross multiply
    21,023.62x = 31,531.47 × 7,873.18
  4. Step 4: Simplify right side
    21,023.62x = 248,252,938.97
  5. Step 5: Solve for x
    x = 248,252,938.97/21,023.62
  6. Step 6: Final answer
    x = 11,808.29

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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.