Home / 21,023.83-31,528.05-6,981.31

Finding the Fourth Proportional to 21,023.83, 31,528.05 and 6,981.31

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Solution

The fourth proportional to 21,023.83, 31,528.05 and 6,981.31 is: 10,469.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,023.83 : 31,528.05 = 6,981.31 : x
  2. Step 2: Convert to fraction form
    21,023.83/31,528.05 = 6,981.31/x
  3. Step 3: Cross multiply
    21,023.83x = 31,528.05 × 6,981.31
  4. Step 4: Simplify right side
    21,023.83x = 220,107,090.75
  5. Step 5: Solve for x
    x = 220,107,090.75/21,023.83
  6. Step 6: Final answer
    x = 10,469.41

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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.