Home / 18,715.22-25,825.89-10,215.65

Finding the Fourth Proportional to 18,715.22, 25,825.89 and 10,215.65

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Solution

The fourth proportional to 18,715.22, 25,825.89 and 10,215.65 is: 14,096.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715.22 : 25,825.89 = 10,215.65 : x
  2. Step 2: Convert to fraction form
    18,715.22/25,825.89 = 10,215.65/x
  3. Step 3: Cross multiply
    18,715.22x = 25,825.89 × 10,215.65
  4. Step 4: Simplify right side
    18,715.22x = 263,828,124.05
  5. Step 5: Solve for x
    x = 263,828,124.05/18,715.22
  6. Step 6: Final answer
    x = 14,096.99

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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.