Home / 12,961.08-19,436.76-6,390.36

Finding the Fourth Proportional to 12,961.08, 19,436.76 and 6,390.36

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Solution

The fourth proportional to 12,961.08, 19,436.76 and 6,390.36 is: 9,583.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961.08 : 19,436.76 = 6,390.36 : x
  2. Step 2: Convert to fraction form
    12,961.08/19,436.76 = 6,390.36/x
  3. Step 3: Cross multiply
    12,961.08x = 19,436.76 × 6,390.36
  4. Step 4: Simplify right side
    12,961.08x = 124,207,893.63
  5. Step 5: Solve for x
    x = 124,207,893.63/12,961.08
  6. Step 6: Final answer
    x = 9,583.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.