Home / 28,097.60-38,771.88-15,521.54

Finding the Fourth Proportional to 28,097.60, 38,771.88 and 15,521.54

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Solution

The fourth proportional to 28,097.60, 38,771.88 and 15,521.54 is: 21,418.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,097.60 : 38,771.88 = 15,521.54 : x
  2. Step 2: Convert to fraction form
    28,097.60/38,771.88 = 15,521.54/x
  3. Step 3: Cross multiply
    28,097.60x = 38,771.88 × 15,521.54
  4. Step 4: Simplify right side
    28,097.60x = 601,799,286.30
  5. Step 5: Solve for x
    x = 601,799,286.30/28,097.60
  6. Step 6: Final answer
    x = 21,418.17

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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.