Home / 21,541.38-29,719.76-13,469.51

Finding the Fourth Proportional to 21,541.38, 29,719.76 and 13,469.51

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Solution

The fourth proportional to 21,541.38, 29,719.76 and 13,469.51 is: 18,583.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,541.38 : 29,719.76 = 13,469.51 : x
  2. Step 2: Convert to fraction form
    21,541.38/29,719.76 = 13,469.51/x
  3. Step 3: Cross multiply
    21,541.38x = 29,719.76 × 13,469.51
  4. Step 4: Simplify right side
    21,541.38x = 400,310,388.57
  5. Step 5: Solve for x
    x = 400,310,388.57/21,541.38
  6. Step 6: Final answer
    x = 18,583.32

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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.