Home / 20,809,154.81-28,716,422.10-11,516,742.92

Finding the Fourth Proportional to 20,809,154.81, 28,716,422.10 and 11,516,742.92

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Solution

The fourth proportional to 20,809,154.81, 28,716,422.10 and 11,516,742.92 is: 15,892,988.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809,154.81 : 28,716,422.10 = 11,516,742.92 : x
  2. Step 2: Convert to fraction form
    20,809,154.81/28,716,422.10 = 11,516,742.92/x
  3. Step 3: Cross multiply
    20,809,154.81x = 28,716,422.10 × 11,516,742.92
  4. Step 4: Simplify right side
    20,809,154.81x = 330,719,650,764,324.44
  5. Step 5: Solve for x
    x = 330,719,650,764,324.44/20,809,154.81
  6. Step 6: Final answer
    x = 15,892,988.15

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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.