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Finding the Fourth Proportional to 19,610.57, 29,415.84 and 7,923.79

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Solution

The fourth proportional to 19,610.57, 29,415.84 and 7,923.79 is: 11,885.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,610.57 : 29,415.84 = 7,923.79 : x
  2. Step 2: Convert to fraction form
    19,610.57/29,415.84 = 7,923.79/x
  3. Step 3: Cross multiply
    19,610.57x = 29,415.84 × 7,923.79
  4. Step 4: Simplify right side
    19,610.57x = 233,084,938.83
  5. Step 5: Solve for x
    x = 233,084,938.83/19,610.57
  6. Step 6: Final answer
    x = 11,885.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.