Home / 15,037.13-20,749.50-8,321.82

Finding the Fourth Proportional to 15,037.13, 20,749.50 and 8,321.82

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Solution

The fourth proportional to 15,037.13, 20,749.50 and 8,321.82 is: 11,483.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,037.13 : 20,749.50 = 8,321.82 : x
  2. Step 2: Convert to fraction form
    15,037.13/20,749.50 = 8,321.82/x
  3. Step 3: Cross multiply
    15,037.13x = 20,749.50 × 8,321.82
  4. Step 4: Simplify right side
    15,037.13x = 172,673,604.09
  5. Step 5: Solve for x
    x = 172,673,604.09/15,037.13
  6. Step 6: Final answer
    x = 11,483.15

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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.