Home / 13,388.63-18,476.30-8,084.75

Finding the Fourth Proportional to 13,388.63, 18,476.30 and 8,084.75

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Solution

The fourth proportional to 13,388.63, 18,476.30 and 8,084.75 is: 11,156.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.63 : 18,476.30 = 8,084.75 : x
  2. Step 2: Convert to fraction form
    13,388.63/18,476.30 = 8,084.75/x
  3. Step 3: Cross multiply
    13,388.63x = 18,476.30 × 8,084.75
  4. Step 4: Simplify right side
    13,388.63x = 149,376,194.26
  5. Step 5: Solve for x
    x = 149,376,194.26/13,388.63
  6. Step 6: Final answer
    x = 11,156.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.