Home / 19,115.36-26,379.38-11,156.05

Finding the Fourth Proportional to 19,115.36, 26,379.38 and 11,156.05

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Solution

The fourth proportional to 19,115.36, 26,379.38 and 11,156.05 is: 15,395.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,115.36 : 26,379.38 = 11,156.05 : x
  2. Step 2: Convert to fraction form
    19,115.36/26,379.38 = 11,156.05/x
  3. Step 3: Cross multiply
    19,115.36x = 26,379.38 × 11,156.05
  4. Step 4: Simplify right side
    19,115.36x = 294,289,682.25
  5. Step 5: Solve for x
    x = 294,289,682.25/19,115.36
  6. Step 6: Final answer
    x = 15,395.46

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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.