Home / 15,570.43-21,481.58-11,986.49

Finding the Fourth Proportional to 15,570.43, 21,481.58 and 11,986.49

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Solution

The fourth proportional to 15,570.43, 21,481.58 and 11,986.49 is: 16,537.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,570.43 : 21,481.58 = 11,986.49 : x
  2. Step 2: Convert to fraction form
    15,570.43/21,481.58 = 11,986.49/x
  3. Step 3: Cross multiply
    15,570.43x = 21,481.58 × 11,986.49
  4. Step 4: Simplify right side
    15,570.43x = 257,488,576.51
  5. Step 5: Solve for x
    x = 257,488,576.51/15,570.43
  6. Step 6: Final answer
    x = 16,537.02

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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.