Home / 20,128,512.30-30,192,768.45-6,665,340.30

Finding the Fourth Proportional to 20,128,512.30, 30,192,768.45 and 6,665,340.30

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Solution

The fourth proportional to 20,128,512.30, 30,192,768.45 and 6,665,340.30 is: 9,998,010.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128,512.30 : 30,192,768.45 = 6,665,340.30 : x
  2. Step 2: Convert to fraction form
    20,128,512.30/30,192,768.45 = 6,665,340.30/x
  3. Step 3: Cross multiply
    20,128,512.30x = 30,192,768.45 × 6,665,340.30
  4. Step 4: Simplify right side
    20,128,512.30x = 201,245,076,318,353.53
  5. Step 5: Solve for x
    x = 201,245,076,318,353.53/20,128,512.30
  6. Step 6: Final answer
    x = 9,998,010.45

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Similar ratio
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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.