Home / 18,439.83-25,447.95-10,890.54

Finding the Fourth Proportional to 18,439.83, 25,447.95 and 10,890.54

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Solution

The fourth proportional to 18,439.83, 25,447.95 and 10,890.54 is: 15,029.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,439.83 : 25,447.95 = 10,890.54 : x
  2. Step 2: Convert to fraction form
    18,439.83/25,447.95 = 10,890.54/x
  3. Step 3: Cross multiply
    18,439.83x = 25,447.95 × 10,890.54
  4. Step 4: Simplify right side
    18,439.83x = 277,141,917.39
  5. Step 5: Solve for x
    x = 277,141,917.39/18,439.83
  6. Step 6: Final answer
    x = 15,029.53

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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.