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Finding the Fourth Proportional to 18,384.73, 27,580.13 and 7,291.47

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Solution

The fourth proportional to 18,384.73, 27,580.13 and 7,291.47 is: 10,938.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,384.73 : 27,580.13 = 7,291.47 : x
  2. Step 2: Convert to fraction form
    18,384.73/27,580.13 = 7,291.47/x
  3. Step 3: Cross multiply
    18,384.73x = 27,580.13 × 7,291.47
  4. Step 4: Simplify right side
    18,384.73x = 201,099,690.49
  5. Step 5: Solve for x
    x = 201,099,690.49/18,384.73
  6. Step 6: Final answer
    x = 10,938.41

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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.