Home / 20,421,635.68-28,181,857.60-11,254,278.42

Finding the Fourth Proportional to 20,421,635.68, 28,181,857.60 and 11,254,278.42

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Solution

The fourth proportional to 20,421,635.68, 28,181,857.60 and 11,254,278.42 is: 15,530,904.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,635.68 : 28,181,857.60 = 11,254,278.42 : x
  2. Step 2: Convert to fraction form
    20,421,635.68/28,181,857.60 = 11,254,278.42/x
  3. Step 3: Cross multiply
    20,421,635.68x = 28,181,857.60 × 11,254,278.42
  4. Step 4: Simplify right side
    20,421,635.68x = 317,166,471,823,193
  5. Step 5: Solve for x
    x = 317,166,471,823,193/20,421,635.68
  6. Step 6: Final answer
    x = 15,530,904.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.