Home / 10,355.26-14,290.42-5,639.54

Finding the Fourth Proportional to 10,355.26, 14,290.42 and 5,639.54

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Solution

The fourth proportional to 10,355.26, 14,290.42 and 5,639.54 is: 7,782.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,355.26 : 14,290.42 = 5,639.54 : x
  2. Step 2: Convert to fraction form
    10,355.26/14,290.42 = 5,639.54/x
  3. Step 3: Cross multiply
    10,355.26x = 14,290.42 × 5,639.54
  4. Step 4: Simplify right side
    10,355.26x = 80,591,395.21
  5. Step 5: Solve for x
    x = 80,591,395.21/10,355.26
  6. Step 6: Final answer
    x = 7,782.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.