Home / 9,904.87-13,668.68-5,428.81

Finding the Fourth Proportional to 9,904.87, 13,668.68 and 5,428.81

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Solution

The fourth proportional to 9,904.87, 13,668.68 and 5,428.81 is: 7,491.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,904.87 : 13,668.68 = 5,428.81 : x
  2. Step 2: Convert to fraction form
    9,904.87/13,668.68 = 5,428.81/x
  3. Step 3: Cross multiply
    9,904.87x = 13,668.68 × 5,428.81
  4. Step 4: Simplify right side
    9,904.87x = 74,204,571.18
  5. Step 5: Solve for x
    x = 74,204,571.18/9,904.87
  6. Step 6: Final answer
    x = 7,491.73

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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.