Home / 20,206,775.35-30,329,325.51-12,507,129.43

Finding the Fourth Proportional to 20,206,775.35, 30,329,325.51 and 12,507,129.43

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Solution

The fourth proportional to 20,206,775.35, 30,329,325.51 and 12,507,129.43 is: 18,772,554.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,206,775.35 : 30,329,325.51 = 12,507,129.43 : x
  2. Step 2: Convert to fraction form
    20,206,775.35/30,329,325.51 = 12,507,129.43/x
  3. Step 3: Cross multiply
    20,206,775.35x = 30,329,325.51 × 12,507,129.43
  4. Step 4: Simplify right side
    20,206,775.35x = 379,332,799,678,170.75
  5. Step 5: Solve for x
    x = 379,332,799,678,170.75/20,206,775.35
  6. Step 6: Final answer
    x = 18,772,554.90

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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.