Home / 20,599.32-30,900.60-8,118.48

Finding the Fourth Proportional to 20,599.32, 30,900.60 and 8,118.48

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Solution

The fourth proportional to 20,599.32, 30,900.60 and 8,118.48 is: 12,178.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,599.32 : 30,900.60 = 8,118.48 : x
  2. Step 2: Convert to fraction form
    20,599.32/30,900.60 = 8,118.48/x
  3. Step 3: Cross multiply
    20,599.32x = 30,900.60 × 8,118.48
  4. Step 4: Simplify right side
    20,599.32x = 250,865,903.09
  5. Step 5: Solve for x
    x = 250,865,903.09/20,599.32
  6. Step 6: Final answer
    x = 12,178.36

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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.