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Finding the Fourth Proportional to 18,201.15, 25,117.14 and 11,913.39

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Solution

The fourth proportional to 18,201.15, 25,117.14 and 11,913.39 is: 16,440.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,201.15 : 25,117.14 = 11,913.39 : x
  2. Step 2: Convert to fraction form
    18,201.15/25,117.14 = 11,913.39/x
  3. Step 3: Cross multiply
    18,201.15x = 25,117.14 × 11,913.39
  4. Step 4: Simplify right side
    18,201.15x = 299,230,284.50
  5. Step 5: Solve for x
    x = 299,230,284.50/18,201.15
  6. Step 6: Final answer
    x = 16,440.19

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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.