Home / 39,610.69-54,662.78-21,705.77

Finding the Fourth Proportional to 39,610.69, 54,662.78 and 21,705.77

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Solution

The fourth proportional to 39,610.69, 54,662.78 and 21,705.77 is: 29,953.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,610.69 : 54,662.78 = 21,705.77 : x
  2. Step 2: Convert to fraction form
    39,610.69/54,662.78 = 21,705.77/x
  3. Step 3: Cross multiply
    39,610.69x = 54,662.78 × 21,705.77
  4. Step 4: Simplify right side
    39,610.69x = 1,186,497,921.16
  5. Step 5: Solve for x
    x = 1,186,497,921.16/39,610.69
  6. Step 6: Final answer
    x = 29,953.98

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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.