Home / 28,146.24-38,840.32-15,396.96

Finding the Fourth Proportional to 28,146.24, 38,840.32 and 15,396.96

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Solution

The fourth proportional to 28,146.24, 38,840.32 and 15,396.96 is: 21,246.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,146.24 : 38,840.32 = 15,396.96 : x
  2. Step 2: Convert to fraction form
    28,146.24/38,840.32 = 15,396.96/x
  3. Step 3: Cross multiply
    28,146.24x = 38,840.32 × 15,396.96
  4. Step 4: Simplify right side
    28,146.24x = 598,022,853.43
  5. Step 5: Solve for x
    x = 598,022,853.43/28,146.24
  6. Step 6: Final answer
    x = 21,246.99

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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.