Home / 18,430.62-27,640.26-5,279.46

Finding the Fourth Proportional to 18,430.62, 27,640.26 and 5,279.46

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Solution

The fourth proportional to 18,430.62, 27,640.26 and 5,279.46 is: 7,917.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,430.62 : 27,640.26 = 5,279.46 : x
  2. Step 2: Convert to fraction form
    18,430.62/27,640.26 = 5,279.46/x
  3. Step 3: Cross multiply
    18,430.62x = 27,640.26 × 5,279.46
  4. Step 4: Simplify right side
    18,430.62x = 145,925,647.06
  5. Step 5: Solve for x
    x = 145,925,647.06/18,430.62
  6. Step 6: Final answer
    x = 7,917.57

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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.