Home / 18,400.34-25,388.96-11,687.06

Finding the Fourth Proportional to 18,400.34, 25,388.96 and 11,687.06

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Solution

The fourth proportional to 18,400.34, 25,388.96 and 11,687.06 is: 16,125.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,400.34 : 25,388.96 = 11,687.06 : x
  2. Step 2: Convert to fraction form
    18,400.34/25,388.96 = 11,687.06/x
  3. Step 3: Cross multiply
    18,400.34x = 25,388.96 × 11,687.06
  4. Step 4: Simplify right side
    18,400.34x = 296,722,298.86
  5. Step 5: Solve for x
    x = 296,722,298.86/18,400.34
  6. Step 6: Final answer
    x = 16,125.91

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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.