Home / 12,558.38-17,330.63-7,845.39

Finding the Fourth Proportional to 12,558.38, 17,330.63 and 7,845.39

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Solution

The fourth proportional to 12,558.38, 17,330.63 and 7,845.39 is: 10,826.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.38 : 17,330.63 = 7,845.39 : x
  2. Step 2: Convert to fraction form
    12,558.38/17,330.63 = 7,845.39/x
  3. Step 3: Cross multiply
    12,558.38x = 17,330.63 × 7,845.39
  4. Step 4: Simplify right side
    12,558.38x = 135,965,512.07
  5. Step 5: Solve for x
    x = 135,965,512.07/12,558.38
  6. Step 6: Final answer
    x = 10,826.68

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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.