Home / 20,829,919.57-31,229,745.72-8,702,851.18

Finding the Fourth Proportional to 20,829,919.57, 31,229,745.72 and 8,702,851.18

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Solution

The fourth proportional to 20,829,919.57, 31,229,745.72 and 8,702,851.18 is: 13,047,953.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829,919.57 : 31,229,745.72 = 8,702,851.18 : x
  2. Step 2: Convert to fraction form
    20,829,919.57/31,229,745.72 = 8,702,851.18/x
  3. Step 3: Cross multiply
    20,829,919.57x = 31,229,745.72 × 8,702,851.18
  4. Step 4: Simplify right side
    20,829,919.57x = 271,787,829,390,401.94
  5. Step 5: Solve for x
    x = 271,787,829,390,401.94/20,829,919.57
  6. Step 6: Final answer
    x = 13,047,953.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.