Home / 39,871.25-55,022.06-21,965.84

Finding the Fourth Proportional to 39,871.25, 55,022.06 and 21,965.84

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Solution

The fourth proportional to 39,871.25, 55,022.06 and 21,965.84 is: 30,312.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,871.25 : 55,022.06 = 21,965.84 : x
  2. Step 2: Convert to fraction form
    39,871.25/55,022.06 = 21,965.84/x
  3. Step 3: Cross multiply
    39,871.25x = 55,022.06 × 21,965.84
  4. Step 4: Simplify right side
    39,871.25x = 1,208,605,381.49
  5. Step 5: Solve for x
    x = 1,208,605,381.49/39,871.25
  6. Step 6: Final answer
    x = 30,312.71

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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.