Home / 20,702,911.20-31,031,038.80-9,925,375.20

Finding the Fourth Proportional to 20,702,911.20, 31,031,038.80 and 9,925,375.20

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Solution

The fourth proportional to 20,702,911.20, 31,031,038.80 and 9,925,375.20 is: 14,876,878.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702,911.20 : 31,031,038.80 = 9,925,375.20 : x
  2. Step 2: Convert to fraction form
    20,702,911.20/31,031,038.80 = 9,925,375.20/x
  3. Step 3: Cross multiply
    20,702,911.20x = 31,031,038.80 × 9,925,375.20
  4. Step 4: Simplify right side
    20,702,911.20x = 307,994,702,935,757.75
  5. Step 5: Solve for x
    x = 307,994,702,935,757.75/20,702,911.20
  6. Step 6: Final answer
    x = 14,876,878.91

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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.