Home / 12,129,400.80-18,194,101.20-11,137,377.60

Finding the Fourth Proportional to 12,129,400.80, 18,194,101.20 and 11,137,377.60

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Solution

The fourth proportional to 12,129,400.80, 18,194,101.20 and 11,137,377.60 is: 16,706,066.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129,400.80 : 18,194,101.20 = 11,137,377.60 : x
  2. Step 2: Convert to fraction form
    12,129,400.80/18,194,101.20 = 11,137,377.60/x
  3. Step 3: Cross multiply
    12,129,400.80x = 18,194,101.20 × 11,137,377.60
  4. Step 4: Simplify right side
    12,129,400.80x = 202,634,575,157,013.09
  5. Step 5: Solve for x
    x = 202,634,575,157,013.09/12,129,400.80
  6. Step 6: Final answer
    x = 16,706,066.40

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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.