Home / 19,128.05-26,409.85-11,961.07

Finding the Fourth Proportional to 19,128.05, 26,409.85 and 11,961.07

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Solution

The fourth proportional to 19,128.05, 26,409.85 and 11,961.07 is: 16,514.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128.05 : 26,409.85 = 11,961.07 : x
  2. Step 2: Convert to fraction form
    19,128.05/26,409.85 = 11,961.07/x
  3. Step 3: Cross multiply
    19,128.05x = 26,409.85 × 11,961.07
  4. Step 4: Simplify right side
    19,128.05x = 315,889,968.61
  5. Step 5: Solve for x
    x = 315,889,968.61/19,128.05
  6. Step 6: Final answer
    x = 16,514.49

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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.