Home / 20,829,006.99-31,248,498.78-8,691,718.74

Finding the Fourth Proportional to 20,829,006.99, 31,248,498.78 and 8,691,718.74

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Solution

The fourth proportional to 20,829,006.99, 31,248,498.78 and 8,691,718.74 is: 13,039,659.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829,006.99 : 31,248,498.78 = 8,691,718.74 : x
  2. Step 2: Convert to fraction form
    20,829,006.99/31,248,498.78 = 8,691,718.74/x
  3. Step 3: Cross multiply
    20,829,006.99x = 31,248,498.78 × 8,691,718.74
  4. Step 4: Simplify right side
    20,829,006.99x = 271,603,162,442,993.16
  5. Step 5: Solve for x
    x = 271,603,162,442,993.16/20,829,006.99
  6. Step 6: Final answer
    x = 13,039,659.67

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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.