Home / 9,904.29-13,668.12-5,428.02

Finding the Fourth Proportional to 9,904.29, 13,668.12 and 5,428.02

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Solution

The fourth proportional to 9,904.29, 13,668.12 and 5,428.02 is: 7,490.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,904.29 : 13,668.12 = 5,428.02 : x
  2. Step 2: Convert to fraction form
    9,904.29/13,668.12 = 5,428.02/x
  3. Step 3: Cross multiply
    9,904.29x = 13,668.12 × 5,428.02
  4. Step 4: Simplify right side
    9,904.29x = 74,190,828.72
  5. Step 5: Solve for x
    x = 74,190,828.72/9,904.29
  6. Step 6: Final answer
    x = 7,490.78

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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.