Home / 20,829,979.07-31,229,835.30-8,702,910.57

Finding the Fourth Proportional to 20,829,979.07, 31,229,835.30 and 8,702,910.57

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Solution

The fourth proportional to 20,829,979.07, 31,229,835.30 and 8,702,910.57 is: 13,048,043.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829,979.07 : 31,229,835.30 = 8,702,910.57 : x
  2. Step 2: Convert to fraction form
    20,829,979.07/31,229,835.30 = 8,702,910.57/x
  3. Step 3: Cross multiply
    20,829,979.07x = 31,229,835.30 × 8,702,910.57
  4. Step 4: Simplify right side
    20,829,979.07x = 271,790,463,731,729.12
  5. Step 5: Solve for x
    x = 271,790,463,731,729.12/20,829,979.07
  6. Step 6: Final answer
    x = 13,048,043.05

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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.