Home / 18,339.81-25,314.96-10,785.81

Finding the Fourth Proportional to 18,339.81, 25,314.96 and 10,785.81

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Solution

The fourth proportional to 18,339.81, 25,314.96 and 10,785.81 is: 14,887.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,339.81 : 25,314.96 = 10,785.81 : x
  2. Step 2: Convert to fraction form
    18,339.81/25,314.96 = 10,785.81/x
  3. Step 3: Cross multiply
    18,339.81x = 25,314.96 × 10,785.81
  4. Step 4: Simplify right side
    18,339.81x = 273,042,348.72
  5. Step 5: Solve for x
    x = 273,042,348.72/18,339.81
  6. Step 6: Final answer
    x = 14,887.96

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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.