Home / 15,037.10-20,749.32-8,321.78

Finding the Fourth Proportional to 15,037.10, 20,749.32 and 8,321.78

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Solution

The fourth proportional to 15,037.10, 20,749.32 and 8,321.78 is: 11,483.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,037.10 : 20,749.32 = 8,321.78 : x
  2. Step 2: Convert to fraction form
    15,037.10/20,749.32 = 8,321.78/x
  3. Step 3: Cross multiply
    15,037.10x = 20,749.32 × 8,321.78
  4. Step 4: Simplify right side
    15,037.10x = 172,671,276.19
  5. Step 5: Solve for x
    x = 172,671,276.19/15,037.10
  6. Step 6: Final answer
    x = 11,483.02

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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.