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Finding the Fourth Proportional to 18,297.72, 25,250.86 and 9,914.22

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Solution

The fourth proportional to 18,297.72, 25,250.86 and 9,914.22 is: 13,681.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,297.72 : 25,250.86 = 9,914.22 : x
  2. Step 2: Convert to fraction form
    18,297.72/25,250.86 = 9,914.22/x
  3. Step 3: Cross multiply
    18,297.72x = 25,250.86 × 9,914.22
  4. Step 4: Simplify right side
    18,297.72x = 250,342,581.23
  5. Step 5: Solve for x
    x = 250,342,581.23/18,297.72
  6. Step 6: Final answer
    x = 13,681.63

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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.