Home / 39,895.44-55,056.07-21,991.13

Finding the Fourth Proportional to 39,895.44, 55,056.07 and 21,991.13

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Solution

The fourth proportional to 39,895.44, 55,056.07 and 21,991.13 is: 30,347.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,895.44 : 55,056.07 = 21,991.13 : x
  2. Step 2: Convert to fraction form
    39,895.44/55,056.07 = 21,991.13/x
  3. Step 3: Cross multiply
    39,895.44x = 55,056.07 × 21,991.13
  4. Step 4: Simplify right side
    39,895.44x = 1,210,745,192.66
  5. Step 5: Solve for x
    x = 1,210,745,192.66/39,895.44
  6. Step 6: Final answer
    x = 30,347.96

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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.