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Finding the Fourth Proportional to 18,551.36, 27,830.68 and 6,864.68

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Solution

The fourth proportional to 18,551.36, 27,830.68 and 6,864.68 is: 10,298.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,551.36 : 27,830.68 = 6,864.68 : x
  2. Step 2: Convert to fraction form
    18,551.36/27,830.68 = 6,864.68/x
  3. Step 3: Cross multiply
    18,551.36x = 27,830.68 × 6,864.68
  4. Step 4: Simplify right side
    18,551.36x = 191,048,712.38
  5. Step 5: Solve for x
    x = 191,048,712.38/18,551.36
  6. Step 6: Final answer
    x = 10,298.37

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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.