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Finding the Fourth Proportional to 12,862.89, 19,278.95 and 6,625.89

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Solution

The fourth proportional to 12,862.89, 19,278.95 and 6,625.89 is: 9,930.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,862.89 : 19,278.95 = 6,625.89 : x
  2. Step 2: Convert to fraction form
    12,862.89/19,278.95 = 6,625.89/x
  3. Step 3: Cross multiply
    12,862.89x = 19,278.95 × 6,625.89
  4. Step 4: Simplify right side
    12,862.89x = 127,740,168.89
  5. Step 5: Solve for x
    x = 127,740,168.89/12,862.89
  6. Step 6: Final answer
    x = 9,930.91

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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.