Home / 18,439.39-25,442.54-10,781.19

Finding the Fourth Proportional to 18,439.39, 25,442.54 and 10,781.19

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Solution

The fourth proportional to 18,439.39, 25,442.54 and 10,781.19 is: 14,875.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,439.39 : 25,442.54 = 10,781.19 : x
  2. Step 2: Convert to fraction form
    18,439.39/25,442.54 = 10,781.19/x
  3. Step 3: Cross multiply
    18,439.39x = 25,442.54 × 10,781.19
  4. Step 4: Simplify right side
    18,439.39x = 274,300,676.70
  5. Step 5: Solve for x
    x = 274,300,676.70/18,439.39
  6. Step 6: Final answer
    x = 14,875.80

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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.