Home / 18,788.75-25,929.29-10,405.25

Finding the Fourth Proportional to 18,788.75, 25,929.29 and 10,405.25

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Solution

The fourth proportional to 18,788.75, 25,929.29 and 10,405.25 is: 14,359.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.75 : 25,929.29 = 10,405.25 : x
  2. Step 2: Convert to fraction form
    18,788.75/25,929.29 = 10,405.25/x
  3. Step 3: Cross multiply
    18,788.75x = 25,929.29 × 10,405.25
  4. Step 4: Simplify right side
    18,788.75x = 269,800,744.77
  5. Step 5: Solve for x
    x = 269,800,744.77/18,788.75
  6. Step 6: Final answer
    x = 14,359.70

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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.