Home / 13,866.39-19,135.31-7,578.63

Finding the Fourth Proportional to 13,866.39, 19,135.31 and 7,578.63

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Solution

The fourth proportional to 13,866.39, 19,135.31 and 7,578.63 is: 10,458.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,866.39 : 19,135.31 = 7,578.63 : x
  2. Step 2: Convert to fraction form
    13,866.39/19,135.31 = 7,578.63/x
  3. Step 3: Cross multiply
    13,866.39x = 19,135.31 × 7,578.63
  4. Step 4: Simplify right side
    13,866.39x = 145,019,396.53
  5. Step 5: Solve for x
    x = 145,019,396.53/13,866.39
  6. Step 6: Final answer
    x = 10,458.34

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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.