Home / 20,968,359.12-28,931,548.68-11,797,655.76

Finding the Fourth Proportional to 20,968,359.12, 28,931,548.68 and 11,797,655.76

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Solution

The fourth proportional to 20,968,359.12, 28,931,548.68 and 11,797,655.76 is: 16,278,071.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968,359.12 : 28,931,548.68 = 11,797,655.76 : x
  2. Step 2: Convert to fraction form
    20,968,359.12/28,931,548.68 = 11,797,655.76/x
  3. Step 3: Cross multiply
    20,968,359.12x = 28,931,548.68 × 11,797,655.76
  4. Step 4: Simplify right side
    20,968,359.12x = 341,324,451,930,322.38
  5. Step 5: Solve for x
    x = 341,324,451,930,322.38/20,968,359.12
  6. Step 6: Final answer
    x = 16,278,071.64

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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.