Home / 28,236.25-38,967.24-15,661

Finding the Fourth Proportional to 28,236.25, 38,967.24 and 15,661

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Solution

The fourth proportional to 28,236.25, 38,967.24 and 15,661 is: 21,612.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,236.25 : 38,967.24 = 15,661 : x
  2. Step 2: Convert to fraction form
    28,236.25/38,967.24 = 15,661/x
  3. Step 3: Cross multiply
    28,236.25x = 38,967.24 × 15,661
  4. Step 4: Simplify right side
    28,236.25x = 610,265,945.64
  5. Step 5: Solve for x
    x = 610,265,945.64/28,236.25
  6. Step 6: Final answer
    x = 21,612.85

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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.