Home / 20,780,385.30-31,171,112.55-9,848,009.70

Finding the Fourth Proportional to 20,780,385.30, 31,171,112.55 and 9,848,009.70

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Solution

The fourth proportional to 20,780,385.30, 31,171,112.55 and 9,848,009.70 is: 14,772,267.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,780,385.30 : 31,171,112.55 = 9,848,009.70 : x
  2. Step 2: Convert to fraction form
    20,780,385.30/31,171,112.55 = 9,848,009.70/x
  3. Step 3: Cross multiply
    20,780,385.30x = 31,171,112.55 × 9,848,009.70
  4. Step 4: Simplify right side
    20,780,385.30x = 306,973,418,752,191.75
  5. Step 5: Solve for x
    x = 306,973,418,752,191.75/20,780,385.30
  6. Step 6: Final answer
    x = 14,772,267.90

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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.