Home / 20,456.28-30,684.42-5,666.31

Finding the Fourth Proportional to 20,456.28, 30,684.42 and 5,666.31

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Solution

The fourth proportional to 20,456.28, 30,684.42 and 5,666.31 is: 8,499.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,456.28 : 30,684.42 = 5,666.31 : x
  2. Step 2: Convert to fraction form
    20,456.28/30,684.42 = 5,666.31/x
  3. Step 3: Cross multiply
    20,456.28x = 30,684.42 × 5,666.31
  4. Step 4: Simplify right side
    20,456.28x = 173,867,435.89
  5. Step 5: Solve for x
    x = 173,867,435.89/20,456.28
  6. Step 6: Final answer
    x = 8,499.47

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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.