Home / 20,390,743.97-28,139,343.71-11,098,291.88

Finding the Fourth Proportional to 20,390,743.97, 28,139,343.71 and 11,098,291.88

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Solution

The fourth proportional to 20,390,743.97, 28,139,343.71 and 11,098,291.88 is: 15,315,706.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390,743.97 : 28,139,343.71 = 11,098,291.88 : x
  2. Step 2: Convert to fraction form
    20,390,743.97/28,139,343.71 = 11,098,291.88/x
  3. Step 3: Cross multiply
    20,390,743.97x = 28,139,343.71 × 11,098,291.88
  4. Step 4: Simplify right side
    20,390,743.97x = 312,298,649,609,033.88
  5. Step 5: Solve for x
    x = 312,298,649,609,033.88/20,390,743.97
  6. Step 6: Final answer
    x = 15,315,706.49

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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.