Home / 20,672,383.68-28,527,889.86-11,507,191.56

Finding the Fourth Proportional to 20,672,383.68, 28,527,889.86 and 11,507,191.56

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Solution

The fourth proportional to 20,672,383.68, 28,527,889.86 and 11,507,191.56 is: 15,879,924.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672,383.68 : 28,527,889.86 = 11,507,191.56 : x
  2. Step 2: Convert to fraction form
    20,672,383.68/28,527,889.86 = 11,507,191.56/x
  3. Step 3: Cross multiply
    20,672,383.68x = 28,527,889.86 × 11,507,191.56
  4. Step 4: Simplify right side
    20,672,383.68x = 328,275,893,421,601.56
  5. Step 5: Solve for x
    x = 328,275,893,421,601.56/20,672,383.68
  6. Step 6: Final answer
    x = 15,879,924.57

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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.