Home / 39,901.53-55,061.58-21,995.55

Finding the Fourth Proportional to 39,901.53, 55,061.58 and 21,995.55

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Solution

The fourth proportional to 39,901.53, 55,061.58 and 21,995.55 is: 30,352.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,901.53 : 55,061.58 = 21,995.55 : x
  2. Step 2: Convert to fraction form
    39,901.53/55,061.58 = 21,995.55/x
  3. Step 3: Cross multiply
    39,901.53x = 55,061.58 × 21,995.55
  4. Step 4: Simplify right side
    39,901.53x = 1,211,109,735.97
  5. Step 5: Solve for x
    x = 1,211,109,735.97/39,901.53
  6. Step 6: Final answer
    x = 30,352.46

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Double scale
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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.