Home / 21,023.68-31,536.56-6,984.96

Finding the Fourth Proportional to 21,023.68, 31,536.56 and 6,984.96

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Solution

The fourth proportional to 21,023.68, 31,536.56 and 6,984.96 is: 10,477.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,023.68 : 31,536.56 = 6,984.96 : x
  2. Step 2: Convert to fraction form
    21,023.68/31,536.56 = 6,984.96/x
  3. Step 3: Cross multiply
    21,023.68x = 31,536.56 × 6,984.96
  4. Step 4: Simplify right side
    21,023.68x = 220,281,610.14
  5. Step 5: Solve for x
    x = 220,281,610.14/21,023.68
  6. Step 6: Final answer
    x = 10,477.79

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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.