Home / 18,887.24-28,330.17-7,785.60

Finding the Fourth Proportional to 18,887.24, 28,330.17 and 7,785.60

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Solution

The fourth proportional to 18,887.24, 28,330.17 and 7,785.60 is: 11,678.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887.24 : 28,330.17 = 7,785.60 : x
  2. Step 2: Convert to fraction form
    18,887.24/28,330.17 = 7,785.60/x
  3. Step 3: Cross multiply
    18,887.24x = 28,330.17 × 7,785.60
  4. Step 4: Simplify right side
    18,887.24x = 220,567,236.12
  5. Step 5: Solve for x
    x = 220,567,236.12/18,887.24
  6. Step 6: Final answer
    x = 11,678.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.