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Finding the Fourth Proportional to 18,269.62, 25,213.16 and 10,203.28

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Solution

The fourth proportional to 18,269.62, 25,213.16 and 10,203.28 is: 14,081.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,269.62 : 25,213.16 = 10,203.28 : x
  2. Step 2: Convert to fraction form
    18,269.62/25,213.16 = 10,203.28/x
  3. Step 3: Cross multiply
    18,269.62x = 25,213.16 × 10,203.28
  4. Step 4: Simplify right side
    18,269.62x = 257,256,893.64
  5. Step 5: Solve for x
    x = 257,256,893.64/18,269.62
  6. Step 6: Final answer
    x = 14,081.13

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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.