Home / 18,660.87-25,755.39-11,111.63

Finding the Fourth Proportional to 18,660.87, 25,755.39 and 11,111.63

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Solution

The fourth proportional to 18,660.87, 25,755.39 and 11,111.63 is: 15,336.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.87 : 25,755.39 = 11,111.63 : x
  2. Step 2: Convert to fraction form
    18,660.87/25,755.39 = 11,111.63/x
  3. Step 3: Cross multiply
    18,660.87x = 25,755.39 × 11,111.63
  4. Step 4: Simplify right side
    18,660.87x = 286,184,235.41
  5. Step 5: Solve for x
    x = 286,184,235.41/18,660.87
  6. Step 6: Final answer
    x = 15,336.06

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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.