Home / 21,143,712.83-31,715,569.24-20,612,271.83

Finding the Fourth Proportional to 21,143,712.83, 31,715,569.24 and 20,612,271.83

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Solution

The fourth proportional to 21,143,712.83, 31,715,569.24 and 20,612,271.83 is: 30,918,407.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,143,712.83 : 31,715,569.24 = 20,612,271.83 : x
  2. Step 2: Convert to fraction form
    21,143,712.83/31,715,569.24 = 20,612,271.83/x
  3. Step 3: Cross multiply
    21,143,712.83x = 31,715,569.24 × 20,612,271.83
  4. Step 4: Simplify right side
    21,143,712.83x = 653,729,934,207,958
  5. Step 5: Solve for x
    x = 653,729,934,207,958/21,143,712.83
  6. Step 6: Final answer
    x = 30,918,407.74

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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.