Home / 10,431.51-15,647.34-2,640.35

Finding the Fourth Proportional to 10,431.51, 15,647.34 and 2,640.35

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Solution

The fourth proportional to 10,431.51, 15,647.34 and 2,640.35 is: 3,960.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,431.51 : 15,647.34 = 2,640.35 : x
  2. Step 2: Convert to fraction form
    10,431.51/15,647.34 = 2,640.35/x
  3. Step 3: Cross multiply
    10,431.51x = 15,647.34 × 2,640.35
  4. Step 4: Simplify right side
    10,431.51x = 41,314,375.93
  5. Step 5: Solve for x
    x = 41,314,375.93/10,431.51
  6. Step 6: Final answer
    x = 3,960.54

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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.