Home / 15,037.22-20,749.74-8,321.78

Finding the Fourth Proportional to 15,037.22, 20,749.74 and 8,321.78

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Solution

The fourth proportional to 15,037.22, 20,749.74 and 8,321.78 is: 11,483.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,037.22 : 20,749.74 = 8,321.78 : x
  2. Step 2: Convert to fraction form
    15,037.22/20,749.74 = 8,321.78/x
  3. Step 3: Cross multiply
    15,037.22x = 20,749.74 × 8,321.78
  4. Step 4: Simplify right side
    15,037.22x = 172,674,771.34
  5. Step 5: Solve for x
    x = 172,674,771.34/15,037.22
  6. Step 6: Final answer
    x = 11,483.16

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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.