Home / 15,972.24-21,988.44-11,986.68

Finding the Fourth Proportional to 15,972.24, 21,988.44 and 11,986.68

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Solution

The fourth proportional to 15,972.24, 21,988.44 and 11,986.68 is: 16,501.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,972.24 : 21,988.44 = 11,986.68 : x
  2. Step 2: Convert to fraction form
    15,972.24/21,988.44 = 11,986.68/x
  3. Step 3: Cross multiply
    15,972.24x = 21,988.44 × 11,986.68
  4. Step 4: Simplify right side
    15,972.24x = 263,568,393.98
  5. Step 5: Solve for x
    x = 263,568,393.98/15,972.24
  6. Step 6: Final answer
    x = 16,501.65

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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.