Home / 13,866.40-19,135.68-7,578.88

Finding the Fourth Proportional to 13,866.40, 19,135.68 and 7,578.88

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Solution

The fourth proportional to 13,866.40, 19,135.68 and 7,578.88 is: 10,458.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,866.40 : 19,135.68 = 7,578.88 : x
  2. Step 2: Convert to fraction form
    13,866.40/19,135.68 = 7,578.88/x
  3. Step 3: Cross multiply
    13,866.40x = 19,135.68 × 7,578.88
  4. Step 4: Simplify right side
    13,866.40x = 145,027,022.44
  5. Step 5: Solve for x
    x = 145,027,022.44/13,866.40
  6. Step 6: Final answer
    x = 10,458.88

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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.