Home / 15,265.92-21,020.88-12,286.56

Finding the Fourth Proportional to 15,265.92, 21,020.88 and 12,286.56

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Solution

The fourth proportional to 15,265.92, 21,020.88 and 12,286.56 is: 16,918.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,265.92 : 21,020.88 = 12,286.56 : x
  2. Step 2: Convert to fraction form
    15,265.92/21,020.88 = 12,286.56/x
  3. Step 3: Cross multiply
    15,265.92x = 21,020.88 × 12,286.56
  4. Step 4: Simplify right side
    15,265.92x = 258,274,303.37
  5. Step 5: Solve for x
    x = 258,274,303.37/15,265.92
  6. Step 6: Final answer
    x = 16,918.36

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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.