Home / 39,962.16-55,146.94-21,812.29

Finding the Fourth Proportional to 39,962.16, 55,146.94 and 21,812.29

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Solution

The fourth proportional to 39,962.16, 55,146.94 and 21,812.29 is: 30,100.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,962.16 : 55,146.94 = 21,812.29 : x
  2. Step 2: Convert to fraction form
    39,962.16/55,146.94 = 21,812.29/x
  3. Step 3: Cross multiply
    39,962.16x = 55,146.94 × 21,812.29
  4. Step 4: Simplify right side
    39,962.16x = 1,202,880,772.16
  5. Step 5: Solve for x
    x = 1,202,880,772.16/39,962.16
  6. Step 6: Final answer
    x = 30,100.49

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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.