Home / 12,715.22-17,553.60-9,876.23

Finding the Fourth Proportional to 12,715.22, 17,553.60 and 9,876.23

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Solution

The fourth proportional to 12,715.22, 17,553.60 and 9,876.23 is: 13,634.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,715.22 : 17,553.60 = 9,876.23 : x
  2. Step 2: Convert to fraction form
    12,715.22/17,553.60 = 9,876.23/x
  3. Step 3: Cross multiply
    12,715.22x = 17,553.60 × 9,876.23
  4. Step 4: Simplify right side
    12,715.22x = 173,363,390.93
  5. Step 5: Solve for x
    x = 173,363,390.93/12,715.22
  6. Step 6: Final answer
    x = 13,634.32

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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.