Home / 12,081,937.20-18,132,820.20-11,987,458.80

Finding the Fourth Proportional to 12,081,937.20, 18,132,820.20 and 11,987,458.80

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Solution

The fourth proportional to 12,081,937.20, 18,132,820.20 and 11,987,458.80 is: 17,991,025.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,081,937.20 : 18,132,820.20 = 11,987,458.80 : x
  2. Step 2: Convert to fraction form
    12,081,937.20/18,132,820.20 = 11,987,458.80/x
  3. Step 3: Cross multiply
    12,081,937.20x = 18,132,820.20 × 11,987,458.80
  4. Step 4: Simplify right side
    12,081,937.20x = 217,366,435,075,307.75
  5. Step 5: Solve for x
    x = 217,366,435,075,307.75/12,081,937.20
  6. Step 6: Final answer
    x = 17,991,025.07

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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.