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Finding the Fourth Proportional to 18,408.08, 25,426.02 and 18,131.60

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Solution

The fourth proportional to 18,408.08, 25,426.02 and 18,131.60 is: 25,044.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,408.08 : 25,426.02 = 18,131.60 : x
  2. Step 2: Convert to fraction form
    18,408.08/25,426.02 = 18,131.60/x
  3. Step 3: Cross multiply
    18,408.08x = 25,426.02 × 18,131.60
  4. Step 4: Simplify right side
    18,408.08x = 461,014,424.23
  5. Step 5: Solve for x
    x = 461,014,424.23/18,408.08
  6. Step 6: Final answer
    x = 25,044.13

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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.