Home / 20,478,420.55-30,722,212.59-7,699,035.97

Finding the Fourth Proportional to 20,478,420.55, 30,722,212.59 and 7,699,035.97

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Solution

The fourth proportional to 20,478,420.55, 30,722,212.59 and 7,699,035.97 is: 11,550,276.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,478,420.55 : 30,722,212.59 = 7,699,035.97 : x
  2. Step 2: Convert to fraction form
    20,478,420.55/30,722,212.59 = 7,699,035.97/x
  3. Step 3: Cross multiply
    20,478,420.55x = 30,722,212.59 × 7,699,035.97
  4. Step 4: Simplify right side
    20,478,420.55x = 236,531,419,702,719.94
  5. Step 5: Solve for x
    x = 236,531,419,702,719.94/20,478,420.55
  6. Step 6: Final answer
    x = 11,550,276.50

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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.