Home / 20,740,080.90-31,110,121.35-9,978,400.65

Finding the Fourth Proportional to 20,740,080.90, 31,110,121.35 and 9,978,400.65

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Solution

The fourth proportional to 20,740,080.90, 31,110,121.35 and 9,978,400.65 is: 14,967,600.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740,080.90 : 31,110,121.35 = 9,978,400.65 : x
  2. Step 2: Convert to fraction form
    20,740,080.90/31,110,121.35 = 9,978,400.65/x
  3. Step 3: Cross multiply
    20,740,080.90x = 31,110,121.35 × 9,978,400.65
  4. Step 4: Simplify right side
    20,740,080.90x = 310,429,255,100,418.88
  5. Step 5: Solve for x
    x = 310,429,255,100,418.88/20,740,080.90
  6. Step 6: Final answer
    x = 14,967,600.98

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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.