Home / 18,836.64-25,999.92-15,085.92

Finding the Fourth Proportional to 18,836.64, 25,999.92 and 15,085.92

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Solution

The fourth proportional to 18,836.64, 25,999.92 and 15,085.92 is: 20,822.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,836.64 : 25,999.92 = 15,085.92 : x
  2. Step 2: Convert to fraction form
    18,836.64/25,999.92 = 15,085.92/x
  3. Step 3: Cross multiply
    18,836.64x = 25,999.92 × 15,085.92
  4. Step 4: Simplify right side
    18,836.64x = 392,232,713.13
  5. Step 5: Solve for x
    x = 392,232,713.13/18,836.64
  6. Step 6: Final answer
    x = 20,822.86

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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.