Home / 39,989.87-55,189.28-22,999.61

Finding the Fourth Proportional to 39,989.87, 55,189.28 and 22,999.61

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Solution

The fourth proportional to 39,989.87, 55,189.28 and 22,999.61 is: 31,741.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,989.87 : 55,189.28 = 22,999.61 : x
  2. Step 2: Convert to fraction form
    39,989.87/55,189.28 = 22,999.61/x
  3. Step 3: Cross multiply
    39,989.87x = 55,189.28 × 22,999.61
  4. Step 4: Simplify right side
    39,989.87x = 1,269,332,111.65
  5. Step 5: Solve for x
    x = 1,269,332,111.65/39,989.87
  6. Step 6: Final answer
    x = 31,741.34

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1.5x scale

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.