Home / 15,942.48-21,994.68-9,971.88

Finding the Fourth Proportional to 15,942.48, 21,994.68 and 9,971.88

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Solution

The fourth proportional to 15,942.48, 21,994.68 and 9,971.88 is: 13,757.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,942.48 : 21,994.68 = 9,971.88 : x
  2. Step 2: Convert to fraction form
    15,942.48/21,994.68 = 9,971.88/x
  3. Step 3: Cross multiply
    15,942.48x = 21,994.68 × 9,971.88
  4. Step 4: Simplify right side
    15,942.48x = 219,328,309.60
  5. Step 5: Solve for x
    x = 219,328,309.60/15,942.48
  6. Step 6: Final answer
    x = 13,757.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.