Home / 20,137.32-30,207.80-8,288.34

Finding the Fourth Proportional to 20,137.32, 30,207.80 and 8,288.34

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Solution

The fourth proportional to 20,137.32, 30,207.80 and 8,288.34 is: 12,433.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.32 : 30,207.80 = 8,288.34 : x
  2. Step 2: Convert to fraction form
    20,137.32/30,207.80 = 8,288.34/x
  3. Step 3: Cross multiply
    20,137.32x = 30,207.80 × 8,288.34
  4. Step 4: Simplify right side
    20,137.32x = 250,372,424.49
  5. Step 5: Solve for x
    x = 250,372,424.49/20,137.32
  6. Step 6: Final answer
    x = 12,433.25

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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.