Home / 20,977.63-31,475.09-15,458.83

Finding the Fourth Proportional to 20,977.63, 31,475.09 and 15,458.83

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Solution

The fourth proportional to 20,977.63, 31,475.09 and 15,458.83 is: 23,194.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.63 : 31,475.09 = 15,458.83 : x
  2. Step 2: Convert to fraction form
    20,977.63/31,475.09 = 15,458.83/x
  3. Step 3: Cross multiply
    20,977.63x = 31,475.09 × 15,458.83
  4. Step 4: Simplify right side
    20,977.63x = 486,568,065.54
  5. Step 5: Solve for x
    x = 486,568,065.54/20,977.63
  6. Step 6: Final answer
    x = 23,194.62

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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.