Home / 21,232.72-29,283.48-15,939.28

Finding the Fourth Proportional to 21,232.72, 29,283.48 and 15,939.28

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Solution

The fourth proportional to 21,232.72, 29,283.48 and 15,939.28 is: 21,982.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,232.72 : 29,283.48 = 15,939.28 : x
  2. Step 2: Convert to fraction form
    21,232.72/29,283.48 = 15,939.28/x
  3. Step 3: Cross multiply
    21,232.72x = 29,283.48 × 15,939.28
  4. Step 4: Simplify right side
    21,232.72x = 466,757,587.09
  5. Step 5: Solve for x
    x = 466,757,587.09/21,232.72
  6. Step 6: Final answer
    x = 21,982.94

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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.