Home / 20,778,429.90-31,140,465.30-11,173,125.90

Finding the Fourth Proportional to 20,778,429.90, 31,140,465.30 and 11,173,125.90

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Solution

The fourth proportional to 20,778,429.90, 31,140,465.30 and 11,173,125.90 is: 16,745,073.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,778,429.90 : 31,140,465.30 = 11,173,125.90 : x
  2. Step 2: Convert to fraction form
    20,778,429.90/31,140,465.30 = 11,173,125.90/x
  3. Step 3: Cross multiply
    20,778,429.90x = 31,140,465.30 × 11,173,125.90
  4. Step 4: Simplify right side
    20,778,429.90x = 347,936,339,381,481.31
  5. Step 5: Solve for x
    x = 347,936,339,381,481.31/20,778,429.90
  6. Step 6: Final answer
    x = 16,745,073.67

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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.