Home / 20,672,373.75-28,527,875.78-11,507,181.63

Finding the Fourth Proportional to 20,672,373.75, 28,527,875.78 and 11,507,181.63

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Solution

The fourth proportional to 20,672,373.75, 28,527,875.78 and 11,507,181.63 is: 15,879,910.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672,373.75 : 28,527,875.78 = 11,507,181.63 : x
  2. Step 2: Convert to fraction form
    20,672,373.75/28,527,875.78 = 11,507,181.63/x
  3. Step 3: Cross multiply
    20,672,373.75x = 28,527,875.78 × 11,507,181.63
  4. Step 4: Simplify right side
    20,672,373.75x = 328,275,448,061,002
  5. Step 5: Solve for x
    x = 328,275,448,061,002/20,672,373.75
  6. Step 6: Final answer
    x = 15,879,910.65

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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.