Home / 20,500,628.66-28,291,458.04-11,333,861.90

Finding the Fourth Proportional to 20,500,628.66, 28,291,458.04 and 11,333,861.90

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Solution

The fourth proportional to 20,500,628.66, 28,291,458.04 and 11,333,861.90 is: 15,641,055.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,500,628.66 : 28,291,458.04 = 11,333,861.90 : x
  2. Step 2: Convert to fraction form
    20,500,628.66/28,291,458.04 = 11,333,861.90/x
  3. Step 3: Cross multiply
    20,500,628.66x = 28,291,458.04 × 11,333,861.90
  4. Step 4: Simplify right side
    20,500,628.66x = 320,651,478,375,004.69
  5. Step 5: Solve for x
    x = 320,651,478,375,004.69/20,500,628.66
  6. Step 6: Final answer
    x = 15,641,055.88

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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.