Home / 15,091,156.72-20,825,142.96-8,215,662.88

Finding the Fourth Proportional to 15,091,156.72, 20,825,142.96 and 8,215,662.88

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Solution

The fourth proportional to 15,091,156.72, 20,825,142.96 and 8,215,662.88 is: 11,337,259.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,091,156.72 : 20,825,142.96 = 8,215,662.88 : x
  2. Step 2: Convert to fraction form
    15,091,156.72/20,825,142.96 = 8,215,662.88/x
  3. Step 3: Cross multiply
    15,091,156.72x = 20,825,142.96 × 8,215,662.88
  4. Step 4: Simplify right side
    15,091,156.72x = 171,092,353,987,165.34
  5. Step 5: Solve for x
    x = 171,092,353,987,165.34/15,091,156.72
  6. Step 6: Final answer
    x = 11,337,259.11

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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.