Home / 18,245.42-25,178.34-10,287.65

Finding the Fourth Proportional to 18,245.42, 25,178.34 and 10,287.65

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Solution

The fourth proportional to 18,245.42, 25,178.34 and 10,287.65 is: 14,196.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,245.42 : 25,178.34 = 10,287.65 : x
  2. Step 2: Convert to fraction form
    18,245.42/25,178.34 = 10,287.65/x
  3. Step 3: Cross multiply
    18,245.42x = 25,178.34 × 10,287.65
  4. Step 4: Simplify right side
    18,245.42x = 259,026,012.45
  5. Step 5: Solve for x
    x = 259,026,012.45/18,245.42
  6. Step 6: Final answer
    x = 14,196.77

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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.