Home / 9,520.75-13,138.68-5,329.81

Finding the Fourth Proportional to 9,520.75, 13,138.68 and 5,329.81

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Solution

The fourth proportional to 9,520.75, 13,138.68 and 5,329.81 is: 7,355.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,520.75 : 13,138.68 = 5,329.81 : x
  2. Step 2: Convert to fraction form
    9,520.75/13,138.68 = 5,329.81/x
  3. Step 3: Cross multiply
    9,520.75x = 13,138.68 × 5,329.81
  4. Step 4: Simplify right side
    9,520.75x = 70,026,668.05
  5. Step 5: Solve for x
    x = 70,026,668.05/9,520.75
  6. Step 6: Final answer
    x = 7,355.16

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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.