Home / 20,313,937.35-30,479,453.55-12,643,997.13

Finding the Fourth Proportional to 20,313,937.35, 30,479,453.55 and 12,643,997.13

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Solution

The fourth proportional to 20,313,937.35, 30,479,453.55 and 12,643,997.13 is: 18,971,315.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313,937.35 : 30,479,453.55 = 12,643,997.13 : x
  2. Step 2: Convert to fraction form
    20,313,937.35/30,479,453.55 = 12,643,997.13/x
  3. Step 3: Cross multiply
    20,313,937.35x = 30,479,453.55 × 12,643,997.13
  4. Step 4: Simplify right side
    20,313,937.35x = 385,382,123,210,168.38
  5. Step 5: Solve for x
    x = 385,382,123,210,168.38/20,313,937.35
  6. Step 6: Final answer
    x = 18,971,315.93

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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.