Home / 28,138,849.80-42,176,781.90-11,962,048.20

Finding the Fourth Proportional to 28,138,849.80, 42,176,781.90 and 11,962,048.20

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Solution

The fourth proportional to 28,138,849.80, 42,176,781.90 and 11,962,048.20 is: 17,929,684.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,138,849.80 : 42,176,781.90 = 11,962,048.20 : x
  2. Step 2: Convert to fraction form
    28,138,849.80/42,176,781.90 = 11,962,048.20/x
  3. Step 3: Cross multiply
    28,138,849.80x = 42,176,781.90 × 11,962,048.20
  4. Step 4: Simplify right side
    28,138,849.80x = 504,520,698,008,687.50
  5. Step 5: Solve for x
    x = 504,520,698,008,687.50/28,138,849.80
  6. Step 6: Final answer
    x = 17,929,684.46

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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.