Home / 13,824.25-19,076.85-7,856.47

Finding the Fourth Proportional to 13,824.25, 19,076.85 and 7,856.47

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Solution

The fourth proportional to 13,824.25, 19,076.85 and 7,856.47 is: 10,841.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,824.25 : 19,076.85 = 7,856.47 : x
  2. Step 2: Convert to fraction form
    13,824.25/19,076.85 = 7,856.47/x
  3. Step 3: Cross multiply
    13,824.25x = 19,076.85 × 7,856.47
  4. Step 4: Simplify right side
    13,824.25x = 149,876,699.72
  5. Step 5: Solve for x
    x = 149,876,699.72/13,824.25
  6. Step 6: Final answer
    x = 10,841.58

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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.