Home / 13,866.09-19,135.19-7,578.46

Finding the Fourth Proportional to 13,866.09, 19,135.19 and 7,578.46

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Solution

The fourth proportional to 13,866.09, 19,135.19 and 7,578.46 is: 10,458.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,866.09 : 19,135.19 = 7,578.46 : x
  2. Step 2: Convert to fraction form
    13,866.09/19,135.19 = 7,578.46/x
  3. Step 3: Cross multiply
    13,866.09x = 19,135.19 × 7,578.46
  4. Step 4: Simplify right side
    13,866.09x = 145,015,314.87
  5. Step 5: Solve for x
    x = 145,015,314.87/13,866.09
  6. Step 6: Final answer
    x = 10,458.27

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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.