Home / 39,866.12-55,014.98-21,960.72

Finding the Fourth Proportional to 39,866.12, 55,014.98 and 21,960.72

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Solution

The fourth proportional to 39,866.12, 55,014.98 and 21,960.72 is: 30,305.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,866.12 : 55,014.98 = 21,960.72 : x
  2. Step 2: Convert to fraction form
    39,866.12/55,014.98 = 21,960.72/x
  3. Step 3: Cross multiply
    39,866.12x = 55,014.98 × 21,960.72
  4. Step 4: Simplify right side
    39,866.12x = 1,208,168,571.59
  5. Step 5: Solve for x
    x = 1,208,168,571.59/39,866.12
  6. Step 6: Final answer
    x = 30,305.65

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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.