Home / 12,588.08-18,884.37-5,188.50

Finding the Fourth Proportional to 12,588.08, 18,884.37 and 5,188.50

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Solution

The fourth proportional to 12,588.08, 18,884.37 and 5,188.50 is: 7,783.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,588.08 : 18,884.37 = 5,188.50 : x
  2. Step 2: Convert to fraction form
    12,588.08/18,884.37 = 5,188.50/x
  3. Step 3: Cross multiply
    12,588.08x = 18,884.37 × 5,188.50
  4. Step 4: Simplify right side
    12,588.08x = 97,981,553.75
  5. Step 5: Solve for x
    x = 97,981,553.75/12,588.08
  6. Step 6: Final answer
    x = 7,783.68

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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.