Home / 21,121,845.48-31,686,345.03-7,285,047.09

Finding the Fourth Proportional to 21,121,845.48, 31,686,345.03 and 7,285,047.09

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Solution

The fourth proportional to 21,121,845.48, 31,686,345.03 and 7,285,047.09 is: 10,928,804.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,121,845.48 : 31,686,345.03 = 7,285,047.09 : x
  2. Step 2: Convert to fraction form
    21,121,845.48/31,686,345.03 = 7,285,047.09/x
  3. Step 3: Cross multiply
    21,121,845.48x = 31,686,345.03 × 7,285,047.09
  4. Step 4: Simplify right side
    21,121,845.48x = 230,836,515,653,537.47
  5. Step 5: Solve for x
    x = 230,836,515,653,537.47/21,121,845.48
  6. Step 6: Final answer
    x = 10,928,804.30

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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.