Home / 13,825.08-19,078.54-7,856.39

Finding the Fourth Proportional to 13,825.08, 19,078.54 and 7,856.39

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Solution

The fourth proportional to 13,825.08, 19,078.54 and 7,856.39 is: 10,841.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,825.08 : 19,078.54 = 7,856.39 : x
  2. Step 2: Convert to fraction form
    13,825.08/19,078.54 = 7,856.39/x
  3. Step 3: Cross multiply
    13,825.08x = 19,078.54 × 7,856.39
  4. Step 4: Simplify right side
    13,825.08x = 149,888,478.93
  5. Step 5: Solve for x
    x = 149,888,478.93/13,825.08
  6. Step 6: Final answer
    x = 10,841.78

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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.