Home / 18,789.25-25,929.98-10,405.75

Finding the Fourth Proportional to 18,789.25, 25,929.98 and 10,405.75

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Solution

The fourth proportional to 18,789.25, 25,929.98 and 10,405.75 is: 14,360.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,789.25 : 25,929.98 = 10,405.75 : x
  2. Step 2: Convert to fraction form
    18,789.25/25,929.98 = 10,405.75/x
  3. Step 3: Cross multiply
    18,789.25x = 25,929.98 × 10,405.75
  4. Step 4: Simplify right side
    18,789.25x = 269,820,889.39
  5. Step 5: Solve for x
    x = 269,820,889.39/18,789.25
  6. Step 6: Final answer
    x = 14,360.39

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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.