Home / 20,500,643.72-28,291,478.76-11,333,876.96

Finding the Fourth Proportional to 20,500,643.72, 28,291,478.76 and 11,333,876.96

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Solution

The fourth proportional to 20,500,643.72, 28,291,478.76 and 11,333,876.96 is: 15,641,076.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,500,643.72 : 28,291,478.76 = 11,333,876.96 : x
  2. Step 2: Convert to fraction form
    20,500,643.72/28,291,478.76 = 11,333,876.96/x
  3. Step 3: Cross multiply
    20,500,643.72x = 28,291,478.76 × 11,333,876.96
  4. Step 4: Simplify right side
    20,500,643.72x = 320,652,139,282,293.44
  5. Step 5: Solve for x
    x = 320,652,139,282,293.44/20,500,643.72
  6. Step 6: Final answer
    x = 15,641,076.62

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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.