Home / 13,865.77-19,134.80-7,578.55

Finding the Fourth Proportional to 13,865.77, 19,134.80 and 7,578.55

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Solution

The fourth proportional to 13,865.77, 19,134.80 and 7,578.55 is: 10,458.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.77 : 19,134.80 = 7,578.55 : x
  2. Step 2: Convert to fraction form
    13,865.77/19,134.80 = 7,578.55/x
  3. Step 3: Cross multiply
    13,865.77x = 19,134.80 × 7,578.55
  4. Step 4: Simplify right side
    13,865.77x = 145,014,038.54
  5. Step 5: Solve for x
    x = 145,014,038.54/13,865.77
  6. Step 6: Final answer
    x = 10,458.42

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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.