Home / 9,904.89-13,668.86-5,428.83

Finding the Fourth Proportional to 9,904.89, 13,668.86 and 5,428.83

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Solution

The fourth proportional to 9,904.89, 13,668.86 and 5,428.83 is: 7,491.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,904.89 : 13,668.86 = 5,428.83 : x
  2. Step 2: Convert to fraction form
    9,904.89/13,668.86 = 5,428.83/x
  3. Step 3: Cross multiply
    9,904.89x = 13,668.86 × 5,428.83
  4. Step 4: Simplify right side
    9,904.89x = 74,205,982.06
  5. Step 5: Solve for x
    x = 74,205,982.06/9,904.89
  6. Step 6: Final answer
    x = 7,491.85

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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.