Home / 21,268.32-29,279.28-15,954.24

Finding the Fourth Proportional to 21,268.32, 29,279.28 and 15,954.24

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Solution

The fourth proportional to 21,268.32, 29,279.28 and 15,954.24 is: 21,963.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.32 : 29,279.28 = 15,954.24 : x
  2. Step 2: Convert to fraction form
    21,268.32/29,279.28 = 15,954.24/x
  3. Step 3: Cross multiply
    21,268.32x = 29,279.28 × 15,954.24
  4. Step 4: Simplify right side
    21,268.32x = 467,128,660.15
  5. Step 5: Solve for x
    x = 467,128,660.15/21,268.32
  6. Step 6: Final answer
    x = 21,963.59

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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.