Home / 20,859,820.80-31,289,731.20-18,338,323.20

Finding the Fourth Proportional to 20,859,820.80, 31,289,731.20 and 18,338,323.20

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Solution

The fourth proportional to 20,859,820.80, 31,289,731.20 and 18,338,323.20 is: 27,507,484.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859,820.80 : 31,289,731.20 = 18,338,323.20 : x
  2. Step 2: Convert to fraction form
    20,859,820.80/31,289,731.20 = 18,338,323.20/x
  3. Step 3: Cross multiply
    20,859,820.80x = 31,289,731.20 × 18,338,323.20
  4. Step 4: Simplify right side
    20,859,820.80x = 573,801,203,586,723.75
  5. Step 5: Solve for x
    x = 573,801,203,586,723.75/20,859,820.80
  6. Step 6: Final answer
    x = 27,507,484.80

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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.