Home / 21,126,353.62-31,691,678.70-7,291,511.80

Finding the Fourth Proportional to 21,126,353.62, 31,691,678.70 and 7,291,511.80

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Solution

The fourth proportional to 21,126,353.62, 31,691,678.70 and 7,291,511.80 is: 10,938,009.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,126,353.62 : 31,691,678.70 = 7,291,511.80 : x
  2. Step 2: Convert to fraction form
    21,126,353.62/31,691,678.70 = 7,291,511.80/x
  3. Step 3: Cross multiply
    21,126,353.62x = 31,691,678.70 × 7,291,511.80
  4. Step 4: Simplify right side
    21,126,353.62x = 231,080,249,202,858.66
  5. Step 5: Solve for x
    x = 231,080,249,202,858.66/21,126,353.62
  6. Step 6: Final answer
    x = 10,938,009.15

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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.