Home / 18,120.48-27,179.51-4,971.75

Finding the Fourth Proportional to 18,120.48, 27,179.51 and 4,971.75

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Solution

The fourth proportional to 18,120.48, 27,179.51 and 4,971.75 is: 7,457.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120.48 : 27,179.51 = 4,971.75 : x
  2. Step 2: Convert to fraction form
    18,120.48/27,179.51 = 4,971.75/x
  3. Step 3: Cross multiply
    18,120.48x = 27,179.51 × 4,971.75
  4. Step 4: Simplify right side
    18,120.48x = 135,129,703.98
  5. Step 5: Solve for x
    x = 135,129,703.98/18,120.48
  6. Step 6: Final answer
    x = 7,457.29

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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.