Home / 18,439.27-25,442.38-10,781.07

Finding the Fourth Proportional to 18,439.27, 25,442.38 and 10,781.07

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Solution

The fourth proportional to 18,439.27, 25,442.38 and 10,781.07 is: 14,875.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,439.27 : 25,442.38 = 10,781.07 : x
  2. Step 2: Convert to fraction form
    18,439.27/25,442.38 = 10,781.07/x
  3. Step 3: Cross multiply
    18,439.27x = 25,442.38 × 10,781.07
  4. Step 4: Simplify right side
    18,439.27x = 274,296,093.22
  5. Step 5: Solve for x
    x = 274,296,093.22/18,439.27
  6. Step 6: Final answer
    x = 14,875.65

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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.