Home / 21,284,010.30-31,926,015.45-20,108,279.10

Finding the Fourth Proportional to 21,284,010.30, 31,926,015.45 and 20,108,279.10

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Solution

The fourth proportional to 21,284,010.30, 31,926,015.45 and 20,108,279.10 is: 30,162,418.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,284,010.30 : 31,926,015.45 = 20,108,279.10 : x
  2. Step 2: Convert to fraction form
    21,284,010.30/31,926,015.45 = 20,108,279.10/x
  3. Step 3: Cross multiply
    21,284,010.30x = 31,926,015.45 × 20,108,279.10
  4. Step 4: Simplify right side
    21,284,010.30x = 641,977,229,219,512.12
  5. Step 5: Solve for x
    x = 641,977,229,219,512.12/21,284,010.30
  6. Step 6: Final answer
    x = 30,162,418.65

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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.