Home / 18,788.67-25,929.05-10,405.17

Finding the Fourth Proportional to 18,788.67, 25,929.05 and 10,405.17

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Solution

The fourth proportional to 18,788.67, 25,929.05 and 10,405.17 is: 14,359.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.67 : 25,929.05 = 10,405.17 : x
  2. Step 2: Convert to fraction form
    18,788.67/25,929.05 = 10,405.17/x
  3. Step 3: Cross multiply
    18,788.67x = 25,929.05 × 10,405.17
  4. Step 4: Simplify right side
    18,788.67x = 269,796,121.16
  5. Step 5: Solve for x
    x = 269,796,121.16/18,788.67
  6. Step 6: Final answer
    x = 14,359.51

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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.