Home / 39,865.97-55,014.94-21,962.18

Finding the Fourth Proportional to 39,865.97, 55,014.94 and 21,962.18

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Solution

The fourth proportional to 39,865.97, 55,014.94 and 21,962.18 is: 30,307.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,865.97 : 55,014.94 = 21,962.18 : x
  2. Step 2: Convert to fraction form
    39,865.97/55,014.94 = 21,962.18/x
  3. Step 3: Cross multiply
    39,865.97x = 55,014.94 × 21,962.18
  4. Step 4: Simplify right side
    39,865.97x = 1,208,248,014.97
  5. Step 5: Solve for x
    x = 1,208,248,014.97/39,865.97
  6. Step 6: Final answer
    x = 30,307.75

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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.