Home / 21,126,379.15-31,691,716.98-7,291,537.30

Finding the Fourth Proportional to 21,126,379.15, 31,691,716.98 and 7,291,537.30

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Solution

The fourth proportional to 21,126,379.15, 31,691,716.98 and 7,291,537.30 is: 10,938,047.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,126,379.15 : 31,691,716.98 = 7,291,537.30 : x
  2. Step 2: Convert to fraction form
    21,126,379.15/31,691,716.98 = 7,291,537.30/x
  3. Step 3: Cross multiply
    21,126,379.15x = 31,691,716.98 × 7,291,537.30
  4. Step 4: Simplify right side
    21,126,379.15x = 231,081,336,460,713.34
  5. Step 5: Solve for x
    x = 231,081,336,460,713.34/21,126,379.15
  6. Step 6: Final answer
    x = 10,938,047.40

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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.