Home / 20,870,690.65-31,306,202.43-8,571,485.31

Finding the Fourth Proportional to 20,870,690.65, 31,306,202.43 and 8,571,485.31

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Solution

The fourth proportional to 20,870,690.65, 31,306,202.43 and 8,571,485.31 is: 12,857,296.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,870,690.65 : 31,306,202.43 = 8,571,485.31 : x
  2. Step 2: Convert to fraction form
    20,870,690.65/31,306,202.43 = 8,571,485.31/x
  3. Step 3: Cross multiply
    20,870,690.65x = 31,306,202.43 × 8,571,485.31
  4. Step 4: Simplify right side
    20,870,690.65x = 268,340,654,091,089.97
  5. Step 5: Solve for x
    x = 268,340,654,091,089.97/20,870,690.65
  6. Step 6: Final answer
    x = 12,857,296.32

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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.