Home / 20,580,748.72-28,401,239.66-11,288,129.83

Finding the Fourth Proportional to 20,580,748.72, 28,401,239.66 and 11,288,129.83

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Solution

The fourth proportional to 20,580,748.72, 28,401,239.66 and 11,288,129.83 is: 15,577,512.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580,748.72 : 28,401,239.66 = 11,288,129.83 : x
  2. Step 2: Convert to fraction form
    20,580,748.72/28,401,239.66 = 11,288,129.83/x
  3. Step 3: Cross multiply
    20,580,748.72x = 28,401,239.66 × 11,288,129.83
  4. Step 4: Simplify right side
    20,580,748.72x = 320,596,880,487,581.31
  5. Step 5: Solve for x
    x = 320,596,880,487,581.31/20,580,748.72
  6. Step 6: Final answer
    x = 15,577,512.99

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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.