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Finding the Fourth Proportional to 18,297.55, 25,250.63 and 9,914.05

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Solution

The fourth proportional to 18,297.55, 25,250.63 and 9,914.05 is: 13,681.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,297.55 : 25,250.63 = 9,914.05 : x
  2. Step 2: Convert to fraction form
    18,297.55/25,250.63 = 9,914.05/x
  3. Step 3: Cross multiply
    18,297.55x = 25,250.63 × 9,914.05
  4. Step 4: Simplify right side
    18,297.55x = 250,335,957.62
  5. Step 5: Solve for x
    x = 250,335,957.62/18,297.55
  6. Step 6: Final answer
    x = 13,681.39

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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.