Home / 20,680.99-31,037.13-15,148.71

Finding the Fourth Proportional to 20,680.99, 31,037.13 and 15,148.71

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Solution

The fourth proportional to 20,680.99, 31,037.13 and 15,148.71 is: 22,734.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.99 : 31,037.13 = 15,148.71 : x
  2. Step 2: Convert to fraction form
    20,680.99/31,037.13 = 15,148.71/x
  3. Step 3: Cross multiply
    20,680.99x = 31,037.13 × 15,148.71
  4. Step 4: Simplify right side
    20,680.99x = 470,172,481.60
  5. Step 5: Solve for x
    x = 470,172,481.60/20,680.99
  6. Step 6: Final answer
    x = 22,734.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.