Home / 21,741.48-30,001.56-12,310.68

Finding the Fourth Proportional to 21,741.48, 30,001.56 and 12,310.68

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Solution

The fourth proportional to 21,741.48, 30,001.56 and 12,310.68 is: 16,987.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,741.48 : 30,001.56 = 12,310.68 : x
  2. Step 2: Convert to fraction form
    21,741.48/30,001.56 = 12,310.68/x
  3. Step 3: Cross multiply
    21,741.48x = 30,001.56 × 12,310.68
  4. Step 4: Simplify right side
    21,741.48x = 369,339,604.66
  5. Step 5: Solve for x
    x = 369,339,604.66/21,741.48
  6. Step 6: Final answer
    x = 16,987.79

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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.