Home / 13,699.05-18,904.36-7,730.97

Finding the Fourth Proportional to 13,699.05, 18,904.36 and 7,730.97

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Solution

The fourth proportional to 13,699.05, 18,904.36 and 7,730.97 is: 10,668.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699.05 : 18,904.36 = 7,730.97 : x
  2. Step 2: Convert to fraction form
    13,699.05/18,904.36 = 7,730.97/x
  3. Step 3: Cross multiply
    13,699.05x = 18,904.36 × 7,730.97
  4. Step 4: Simplify right side
    13,699.05x = 146,149,040.03
  5. Step 5: Solve for x
    x = 146,149,040.03/13,699.05
  6. Step 6: Final answer
    x = 10,668.55

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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.