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Finding the Fourth Proportional to 13,479.71, 18,592.10 and 8,934.17

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Solution

The fourth proportional to 13,479.71, 18,592.10 and 8,934.17 is: 12,322.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.71 : 18,592.10 = 8,934.17 : x
  2. Step 2: Convert to fraction form
    13,479.71/18,592.10 = 8,934.17/x
  3. Step 3: Cross multiply
    13,479.71x = 18,592.10 × 8,934.17
  4. Step 4: Simplify right side
    13,479.71x = 166,104,982.06
  5. Step 5: Solve for x
    x = 166,104,982.06/13,479.71
  6. Step 6: Final answer
    x = 12,322.59

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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.