Home / 39,409.86-59,018.66-20,705.56

Finding the Fourth Proportional to 39,409.86, 59,018.66 and 20,705.56

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Solution

The fourth proportional to 39,409.86, 59,018.66 and 20,705.56 is: 31,007.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,409.86 : 59,018.66 = 20,705.56 : x
  2. Step 2: Convert to fraction form
    39,409.86/59,018.66 = 20,705.56/x
  3. Step 3: Cross multiply
    39,409.86x = 59,018.66 × 20,705.56
  4. Step 4: Simplify right side
    39,409.86x = 1,222,014,405.75
  5. Step 5: Solve for x
    x = 1,222,014,405.75/39,409.86
  6. Step 6: Final answer
    x = 31,007.83

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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.