Home / 19,118.70-26,379.19-11,156.38

Finding the Fourth Proportional to 19,118.70, 26,379.19 and 11,156.38

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Solution

The fourth proportional to 19,118.70, 26,379.19 and 11,156.38 is: 15,393.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,118.70 : 26,379.19 = 11,156.38 : x
  2. Step 2: Convert to fraction form
    19,118.70/26,379.19 = 11,156.38/x
  3. Step 3: Cross multiply
    19,118.70x = 26,379.19 × 11,156.38
  4. Step 4: Simplify right side
    19,118.70x = 294,296,267.73
  5. Step 5: Solve for x
    x = 294,296,267.73/19,118.70
  6. Step 6: Final answer
    x = 15,393.11

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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.