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Finding the Fourth Proportional to 18,864.38, 28,296.47 and 4,824.38

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Solution

The fourth proportional to 18,864.38, 28,296.47 and 4,824.38 is: 7,236.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,864.38 : 28,296.47 = 4,824.38 : x
  2. Step 2: Convert to fraction form
    18,864.38/28,296.47 = 4,824.38/x
  3. Step 3: Cross multiply
    18,864.38x = 28,296.47 × 4,824.38
  4. Step 4: Simplify right side
    18,864.38x = 136,512,992.77
  5. Step 5: Solve for x
    x = 136,512,992.77/18,864.38
  6. Step 6: Final answer
    x = 7,236.55

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1.5x scale

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.