Home / 20,436.12-30,649.32-5,644.71

Finding the Fourth Proportional to 20,436.12, 30,649.32 and 5,644.71

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Solution

The fourth proportional to 20,436.12, 30,649.32 and 5,644.71 is: 8,465.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.12 : 30,649.32 = 5,644.71 : x
  2. Step 2: Convert to fraction form
    20,436.12/30,649.32 = 5,644.71/x
  3. Step 3: Cross multiply
    20,436.12x = 30,649.32 × 5,644.71
  4. Step 4: Simplify right side
    20,436.12x = 173,006,523.10
  5. Step 5: Solve for x
    x = 173,006,523.10/20,436.12
  6. Step 6: Final answer
    x = 8,465.72

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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.