Home / 13,790,864.70-20,686,297.05-12,302,829.90

Finding the Fourth Proportional to 13,790,864.70, 20,686,297.05 and 12,302,829.90

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Solution

The fourth proportional to 13,790,864.70, 20,686,297.05 and 12,302,829.90 is: 18,454,244.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,790,864.70 : 20,686,297.05 = 12,302,829.90 : x
  2. Step 2: Convert to fraction form
    13,790,864.70/20,686,297.05 = 12,302,829.90/x
  3. Step 3: Cross multiply
    13,790,864.70x = 20,686,297.05 × 12,302,829.90
  4. Step 4: Simplify right side
    13,790,864.70x = 254,499,993,867,021.81
  5. Step 5: Solve for x
    x = 254,499,993,867,021.81/13,790,864.70
  6. Step 6: Final answer
    x = 18,454,244.85

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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.