Home / 20,881,541.12-31,318,578.72-13,285,944.32

Finding the Fourth Proportional to 20,881,541.12, 31,318,578.72 and 13,285,944.32

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Solution

The fourth proportional to 20,881,541.12, 31,318,578.72 and 13,285,944.32 is: 19,926,541.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881,541.12 : 31,318,578.72 = 13,285,944.32 : x
  2. Step 2: Convert to fraction form
    20,881,541.12/31,318,578.72 = 13,285,944.32/x
  3. Step 3: Cross multiply
    20,881,541.12x = 31,318,578.72 × 13,285,944.32
  4. Step 4: Simplify right side
    20,881,541.12x = 416,096,893,055,456.88
  5. Step 5: Solve for x
    x = 416,096,893,055,456.88/20,881,541.12
  6. Step 6: Final answer
    x = 19,926,541.37

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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.