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Finding the Fourth Proportional to 18,635.33, 27,925.81 and 8,643.13

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Solution

The fourth proportional to 18,635.33, 27,925.81 and 8,643.13 is: 12,952.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,635.33 : 27,925.81 = 8,643.13 : x
  2. Step 2: Convert to fraction form
    18,635.33/27,925.81 = 8,643.13/x
  3. Step 3: Cross multiply
    18,635.33x = 27,925.81 × 8,643.13
  4. Step 4: Simplify right side
    18,635.33x = 241,366,406.19
  5. Step 5: Solve for x
    x = 241,366,406.19/18,635.33
  6. Step 6: Final answer
    x = 12,952.09

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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.