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Finding the Fourth Proportional to 13,618.29, 18,794.13 and 7,569.21

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Solution

The fourth proportional to 13,618.29, 18,794.13 and 7,569.21 is: 10,446.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.29 : 18,794.13 = 7,569.21 : x
  2. Step 2: Convert to fraction form
    13,618.29/18,794.13 = 7,569.21/x
  3. Step 3: Cross multiply
    13,618.29x = 18,794.13 × 7,569.21
  4. Step 4: Simplify right side
    13,618.29x = 142,256,716.74
  5. Step 5: Solve for x
    x = 142,256,716.74/13,618.29
  6. Step 6: Final answer
    x = 10,446.00

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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.