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Finding the Fourth Proportional to 18,397.89, 25,389.09 and 10,014.39

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Solution

The fourth proportional to 18,397.89, 25,389.09 and 10,014.39 is: 13,819.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,397.89 : 25,389.09 = 10,014.39 : x
  2. Step 2: Convert to fraction form
    18,397.89/25,389.09 = 10,014.39/x
  3. Step 3: Cross multiply
    18,397.89x = 25,389.09 × 10,014.39
  4. Step 4: Simplify right side
    18,397.89x = 254,256,249.01
  5. Step 5: Solve for x
    x = 254,256,249.01/18,397.89
  6. Step 6: Final answer
    x = 13,819.86

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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.