Home / 20,687,875.45-28,548,212.99-11,395,245.47

Finding the Fourth Proportional to 20,687,875.45, 28,548,212.99 and 11,395,245.47

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Solution

The fourth proportional to 20,687,875.45, 28,548,212.99 and 11,395,245.47 is: 15,724,857.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687,875.45 : 28,548,212.99 = 11,395,245.47 : x
  2. Step 2: Convert to fraction form
    20,687,875.45/28,548,212.99 = 11,395,245.47/x
  3. Step 3: Cross multiply
    20,687,875.45x = 28,548,212.99 × 11,395,245.47
  4. Step 4: Simplify right side
    20,687,875.45x = 325,313,894,551,175.38
  5. Step 5: Solve for x
    x = 325,313,894,551,175.38/20,687,875.45
  6. Step 6: Final answer
    x = 15,724,857.56

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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.