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Finding the Fourth Proportional to 18,633.47, 27,946.64 and 7,235.40

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Solution

The fourth proportional to 18,633.47, 27,946.64 and 7,235.40 is: 10,851.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,633.47 : 27,946.64 = 7,235.40 : x
  2. Step 2: Convert to fraction form
    18,633.47/27,946.64 = 7,235.40/x
  3. Step 3: Cross multiply
    18,633.47x = 27,946.64 × 7,235.40
  4. Step 4: Simplify right side
    18,633.47x = 202,204,961.23
  5. Step 5: Solve for x
    x = 202,204,961.23/18,633.47
  6. Step 6: Final answer
    x = 10,851.71

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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.