Home / 15,324.96-21,147.96-8,612.28

Finding the Fourth Proportional to 15,324.96, 21,147.96 and 8,612.28

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Solution

The fourth proportional to 15,324.96, 21,147.96 and 8,612.28 is: 11,884.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,324.96 : 21,147.96 = 8,612.28 : x
  2. Step 2: Convert to fraction form
    15,324.96/21,147.96 = 8,612.28/x
  3. Step 3: Cross multiply
    15,324.96x = 21,147.96 × 8,612.28
  4. Step 4: Simplify right side
    15,324.96x = 182,132,152.95
  5. Step 5: Solve for x
    x = 182,132,152.95/15,324.96
  6. Step 6: Final answer
    x = 11,884.67

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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.