Home / 20,218,987.30-30,307,813.80-9,968,080.90

Finding the Fourth Proportional to 20,218,987.30, 30,307,813.80 and 9,968,080.90

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Solution

The fourth proportional to 20,218,987.30, 30,307,813.80 and 9,968,080.90 is: 14,941,932.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218,987.30 : 30,307,813.80 = 9,968,080.90 : x
  2. Step 2: Convert to fraction form
    20,218,987.30/30,307,813.80 = 9,968,080.90/x
  3. Step 3: Cross multiply
    20,218,987.30x = 30,307,813.80 × 9,968,080.90
  4. Step 4: Simplify right side
    20,218,987.30x = 302,110,739,860,536.44
  5. Step 5: Solve for x
    x = 302,110,739,860,536.44/20,218,987.30
  6. Step 6: Final answer
    x = 14,941,932.32

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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.