Home / 20,458.21-30,687.32-5,666.80

Finding the Fourth Proportional to 20,458.21, 30,687.32 and 5,666.80

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Solution

The fourth proportional to 20,458.21, 30,687.32 and 5,666.80 is: 8,500.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,458.21 : 30,687.32 = 5,666.80 : x
  2. Step 2: Convert to fraction form
    20,458.21/30,687.32 = 5,666.80/x
  3. Step 3: Cross multiply
    20,458.21x = 30,687.32 × 5,666.80
  4. Step 4: Simplify right side
    20,458.21x = 173,898,904.98
  5. Step 5: Solve for x
    x = 173,898,904.98/20,458.21
  6. Step 6: Final answer
    x = 8,500.20

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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.