Home / 12,881.98-19,291.29-6,286.90

Finding the Fourth Proportional to 12,881.98, 19,291.29 and 6,286.90

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Solution

The fourth proportional to 12,881.98, 19,291.29 and 6,286.90 is: 9,414.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,881.98 : 19,291.29 = 6,286.90 : x
  2. Step 2: Convert to fraction form
    12,881.98/19,291.29 = 6,286.90/x
  3. Step 3: Cross multiply
    12,881.98x = 19,291.29 × 6,286.90
  4. Step 4: Simplify right side
    12,881.98x = 121,282,411.10
  5. Step 5: Solve for x
    x = 121,282,411.10/12,881.98
  6. Step 6: Final answer
    x = 9,414.89

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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.