Home / 14,146.25-19,521.41-8,178.98

Finding the Fourth Proportional to 14,146.25, 19,521.41 and 8,178.98

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Solution

The fourth proportional to 14,146.25, 19,521.41 and 8,178.98 is: 11,286.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,146.25 : 19,521.41 = 8,178.98 : x
  2. Step 2: Convert to fraction form
    14,146.25/19,521.41 = 8,178.98/x
  3. Step 3: Cross multiply
    14,146.25x = 19,521.41 × 8,178.98
  4. Step 4: Simplify right side
    14,146.25x = 159,665,083.46
  5. Step 5: Solve for x
    x = 159,665,083.46/14,146.25
  6. Step 6: Final answer
    x = 11,286.75

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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.