Home / 20,780,397.80-31,171,131.30-9,848,022.20

Finding the Fourth Proportional to 20,780,397.80, 31,171,131.30 and 9,848,022.20

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Solution

The fourth proportional to 20,780,397.80, 31,171,131.30 and 9,848,022.20 is: 14,772,286.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,780,397.80 : 31,171,131.30 = 9,848,022.20 : x
  2. Step 2: Convert to fraction form
    20,780,397.80/31,171,131.30 = 9,848,022.20/x
  3. Step 3: Cross multiply
    20,780,397.80x = 31,171,131.30 × 9,848,022.20
  4. Step 4: Simplify right side
    20,780,397.80x = 306,973,993,041,514.88
  5. Step 5: Solve for x
    x = 306,973,993,041,514.88/20,780,397.80
  6. Step 6: Final answer
    x = 14,772,286.65

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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.