Home / 21,625.92-29,835-15,261.75

Finding the Fourth Proportional to 21,625.92, 29,835 and 15,261.75

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Solution

The fourth proportional to 21,625.92, 29,835 and 15,261.75 is: 21,055.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,625.92 : 29,835 = 15,261.75 : x
  2. Step 2: Convert to fraction form
    21,625.92/29,835 = 15,261.75/x
  3. Step 3: Cross multiply
    21,625.92x = 29,835 × 15,261.75
  4. Step 4: Simplify right side
    21,625.92x = 455,334,311.25
  5. Step 5: Solve for x
    x = 455,334,311.25/21,625.92
  6. Step 6: Final answer
    x = 21,055.03

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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.