Home / 28,169.54-38,873.63-15,422.57

Finding the Fourth Proportional to 28,169.54, 38,873.63 and 15,422.57

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Solution

The fourth proportional to 28,169.54, 38,873.63 and 15,422.57 is: 21,282.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,169.54 : 38,873.63 = 15,422.57 : x
  2. Step 2: Convert to fraction form
    28,169.54/38,873.63 = 15,422.57/x
  3. Step 3: Cross multiply
    28,169.54x = 38,873.63 × 15,422.57
  4. Step 4: Simplify right side
    28,169.54x = 599,531,008.35
  5. Step 5: Solve for x
    x = 599,531,008.35/28,169.54
  6. Step 6: Final answer
    x = 21,282.96

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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.