Home / 20,912,308.75-28,857,720.98-11,619,561.07

Finding the Fourth Proportional to 20,912,308.75, 28,857,720.98 and 11,619,561.07

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Solution

The fourth proportional to 20,912,308.75, 28,857,720.98 and 11,619,561.07 is: 16,034,291.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,912,308.75 : 28,857,720.98 = 11,619,561.07 : x
  2. Step 2: Convert to fraction form
    20,912,308.75/28,857,720.98 = 11,619,561.07/x
  3. Step 3: Cross multiply
    20,912,308.75x = 28,857,720.98 × 11,619,561.07
  4. Step 4: Simplify right side
    20,912,308.75x = 335,314,051,267,891.25
  5. Step 5: Solve for x
    x = 335,314,051,267,891.25/20,912,308.75
  6. Step 6: Final answer
    x = 16,034,291.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.