Home / 20,747,551.40-31,100,331.90-12,223,500.20

Finding the Fourth Proportional to 20,747,551.40, 31,100,331.90 and 12,223,500.20

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Solution

The fourth proportional to 20,747,551.40, 31,100,331.90 and 12,223,500.20 is: 18,322,880.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747,551.40 : 31,100,331.90 = 12,223,500.20 : x
  2. Step 2: Convert to fraction form
    20,747,551.40/31,100,331.90 = 12,223,500.20/x
  3. Step 3: Cross multiply
    20,747,551.40x = 31,100,331.90 × 12,223,500.20
  4. Step 4: Simplify right side
    20,747,551.40x = 380,154,913,199,716.31
  5. Step 5: Solve for x
    x = 380,154,913,199,716.31/20,747,551.40
  6. Step 6: Final answer
    x = 18,322,880.90

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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.