Home / 20,675,974.72-28,532,845.92-11,508,421.12

Finding the Fourth Proportional to 20,675,974.72, 28,532,845.92 and 11,508,421.12

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Solution

The fourth proportional to 20,675,974.72, 28,532,845.92 and 11,508,421.12 is: 15,881,621.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675,974.72 : 28,532,845.92 = 11,508,421.12 : x
  2. Step 2: Convert to fraction form
    20,675,974.72/28,532,845.92 = 11,508,421.12/x
  3. Step 3: Cross multiply
    20,675,974.72x = 28,532,845.92 × 11,508,421.12
  4. Step 4: Simplify right side
    20,675,974.72x = 328,368,006,599,433.81
  5. Step 5: Solve for x
    x = 328,368,006,599,433.81/20,675,974.72
  6. Step 6: Final answer
    x = 15,881,621.59

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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.