Home / 13,866.12-19,134.90-7,578.54

Finding the Fourth Proportional to 13,866.12, 19,134.90 and 7,578.54

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Solution

The fourth proportional to 13,866.12, 19,134.90 and 7,578.54 is: 10,458.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,866.12 : 19,134.90 = 7,578.54 : x
  2. Step 2: Convert to fraction form
    13,866.12/19,134.90 = 7,578.54/x
  3. Step 3: Cross multiply
    13,866.12x = 19,134.90 × 7,578.54
  4. Step 4: Simplify right side
    13,866.12x = 145,014,605.05
  5. Step 5: Solve for x
    x = 145,014,605.05/13,866.12
  6. Step 6: Final answer
    x = 10,458.20

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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.