Home / 20,912,308.79-28,857,721.04-11,619,561.11

Finding the Fourth Proportional to 20,912,308.79, 28,857,721.04 and 11,619,561.11

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Solution

The fourth proportional to 20,912,308.79, 28,857,721.04 and 11,619,561.11 is: 16,034,291.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,912,308.79 : 28,857,721.04 = 11,619,561.11 : x
  2. Step 2: Convert to fraction form
    20,912,308.79/28,857,721.04 = 11,619,561.11/x
  3. Step 3: Cross multiply
    20,912,308.79x = 28,857,721.04 × 11,619,561.11
  4. Step 4: Simplify right side
    20,912,308.79x = 335,314,053,162,708.19
  5. Step 5: Solve for x
    x = 335,314,053,162,708.19/20,912,308.79
  6. Step 6: Final answer
    x = 16,034,291.41

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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.