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Finding the Fourth Proportional to 18,453.66, 25,465.53 and 10,388.18

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Solution

The fourth proportional to 18,453.66, 25,465.53 and 10,388.18 is: 14,335.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,453.66 : 25,465.53 = 10,388.18 : x
  2. Step 2: Convert to fraction form
    18,453.66/25,465.53 = 10,388.18/x
  3. Step 3: Cross multiply
    18,453.66x = 25,465.53 × 10,388.18
  4. Step 4: Simplify right side
    18,453.66x = 264,540,382.11
  5. Step 5: Solve for x
    x = 264,540,382.11/18,453.66
  6. Step 6: Final answer
    x = 14,335.39

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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.