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Finding the Fourth Proportional to 13,219.62, 18,244.62 and 7,555.29

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Solution

The fourth proportional to 13,219.62, 18,244.62 and 7,555.29 is: 10,427.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.62 : 18,244.62 = 7,555.29 : x
  2. Step 2: Convert to fraction form
    13,219.62/18,244.62 = 7,555.29/x
  3. Step 3: Cross multiply
    13,219.62x = 18,244.62 × 7,555.29
  4. Step 4: Simplify right side
    13,219.62x = 137,843,395.04
  5. Step 5: Solve for x
    x = 137,843,395.04/13,219.62
  6. Step 6: Final answer
    x = 10,427.18

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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.