Home / 20,679,656.40-28,538,700.03-11,387,629.35

Finding the Fourth Proportional to 20,679,656.40, 28,538,700.03 and 11,387,629.35

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Solution

The fourth proportional to 20,679,656.40, 28,538,700.03 and 11,387,629.35 is: 15,715,354.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679,656.40 : 28,538,700.03 = 11,387,629.35 : x
  2. Step 2: Convert to fraction form
    20,679,656.40/28,538,700.03 = 11,387,629.35/x
  3. Step 3: Cross multiply
    20,679,656.40x = 28,538,700.03 × 11,387,629.35
  4. Step 4: Simplify right side
    20,679,656.40x = 324,988,138,072,473.88
  5. Step 5: Solve for x
    x = 324,988,138,072,473.88/20,679,656.40
  6. Step 6: Final answer
    x = 15,715,354.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.