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Finding the Fourth Proportional to 15,201,174.16, 20,977,218.84 and 8,674,686.64

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Solution

The fourth proportional to 15,201,174.16, 20,977,218.84 and 8,674,686.64 is: 11,970,838.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,201,174.16 : 20,977,218.84 = 8,674,686.64 : x
  2. Step 2: Convert to fraction form
    15,201,174.16/20,977,218.84 = 8,674,686.64/x
  3. Step 3: Cross multiply
    15,201,174.16x = 20,977,218.84 × 8,674,686.64
  4. Step 4: Simplify right side
    15,201,174.16x = 181,970,800,015,704.31
  5. Step 5: Solve for x
    x = 181,970,800,015,704.31/15,201,174.16
  6. Step 6: Final answer
    x = 11,970,838.44

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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.