Home / 13,866.33-19,135.54-7,578.71

Finding the Fourth Proportional to 13,866.33, 19,135.54 and 7,578.71

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Solution

The fourth proportional to 13,866.33, 19,135.54 and 7,578.71 is: 10,458.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,866.33 : 19,135.54 = 7,578.71 : x
  2. Step 2: Convert to fraction form
    13,866.33/19,135.54 = 7,578.71/x
  3. Step 3: Cross multiply
    13,866.33x = 19,135.54 × 7,578.71
  4. Step 4: Simplify right side
    13,866.33x = 145,022,708.35
  5. Step 5: Solve for x
    x = 145,022,708.35/13,866.33
  6. Step 6: Final answer
    x = 10,458.62

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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.