Home / 9,904.47-13,668.27-5,428.12

Finding the Fourth Proportional to 9,904.47, 13,668.27 and 5,428.12

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Solution

The fourth proportional to 9,904.47, 13,668.27 and 5,428.12 is: 7,490.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,904.47 : 13,668.27 = 5,428.12 : x
  2. Step 2: Convert to fraction form
    9,904.47/13,668.27 = 5,428.12/x
  3. Step 3: Cross multiply
    9,904.47x = 13,668.27 × 5,428.12
  4. Step 4: Simplify right side
    9,904.47x = 74,193,009.75
  5. Step 5: Solve for x
    x = 74,193,009.75/9,904.47
  6. Step 6: Final answer
    x = 7,490.86

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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.