Home / 20,731,976.10-31,097,964.15-9,947,441.70

Finding the Fourth Proportional to 20,731,976.10, 31,097,964.15 and 9,947,441.70

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Solution

The fourth proportional to 20,731,976.10, 31,097,964.15 and 9,947,441.70 is: 14,921,162.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731,976.10 : 31,097,964.15 = 9,947,441.70 : x
  2. Step 2: Convert to fraction form
    20,731,976.10/31,097,964.15 = 9,947,441.70/x
  3. Step 3: Cross multiply
    20,731,976.10x = 31,097,964.15 × 9,947,441.70
  4. Step 4: Simplify right side
    20,731,976.10x = 309,345,185,370,815
  5. Step 5: Solve for x
    x = 309,345,185,370,815/20,731,976.10
  6. Step 6: Final answer
    x = 14,921,162.55

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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.