Home / 18,961.64-28,446.50-7,274.76

Finding the Fourth Proportional to 18,961.64, 28,446.50 and 7,274.76

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Solution

The fourth proportional to 18,961.64, 28,446.50 and 7,274.76 is: 10,913.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,961.64 : 28,446.50 = 7,274.76 : x
  2. Step 2: Convert to fraction form
    18,961.64/28,446.50 = 7,274.76/x
  3. Step 3: Cross multiply
    18,961.64x = 28,446.50 × 7,274.76
  4. Step 4: Simplify right side
    18,961.64x = 206,941,460.34
  5. Step 5: Solve for x
    x = 206,941,460.34/18,961.64
  6. Step 6: Final answer
    x = 10,913.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.