Home / 21,542.37-29,708.42-13,980.62

Finding the Fourth Proportional to 21,542.37, 29,708.42 and 13,980.62

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Solution

The fourth proportional to 21,542.37, 29,708.42 and 13,980.62 is: 19,280.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,542.37 : 29,708.42 = 13,980.62 : x
  2. Step 2: Convert to fraction form
    21,542.37/29,708.42 = 13,980.62/x
  3. Step 3: Cross multiply
    21,542.37x = 29,708.42 × 13,980.62
  4. Step 4: Simplify right side
    21,542.37x = 415,341,912.38
  5. Step 5: Solve for x
    x = 415,341,912.38/21,542.37
  6. Step 6: Final answer
    x = 19,280.23

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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.