Home / 18,699.72-27,985.05-11,581.05

Finding the Fourth Proportional to 18,699.72, 27,985.05 and 11,581.05

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Solution

The fourth proportional to 18,699.72, 27,985.05 and 11,581.05 is: 17,331.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,699.72 : 27,985.05 = 11,581.05 : x
  2. Step 2: Convert to fraction form
    18,699.72/27,985.05 = 11,581.05/x
  3. Step 3: Cross multiply
    18,699.72x = 27,985.05 × 11,581.05
  4. Step 4: Simplify right side
    18,699.72x = 324,096,263.30
  5. Step 5: Solve for x
    x = 324,096,263.30/18,699.72
  6. Step 6: Final answer
    x = 17,331.61

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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.