Home / 15,227.39-21,011.77-8,512.18

Finding the Fourth Proportional to 15,227.39, 21,011.77 and 8,512.18

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Solution

The fourth proportional to 15,227.39, 21,011.77 and 8,512.18 is: 11,745.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,227.39 : 21,011.77 = 8,512.18 : x
  2. Step 2: Convert to fraction form
    15,227.39/21,011.77 = 8,512.18/x
  3. Step 3: Cross multiply
    15,227.39x = 21,011.77 × 8,512.18
  4. Step 4: Simplify right side
    15,227.39x = 178,855,968.36
  5. Step 5: Solve for x
    x = 178,855,968.36/15,227.39
  6. Step 6: Final answer
    x = 11,745.67

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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.