Home / 19,120.76-26,388.06-11,161.28

Finding the Fourth Proportional to 19,120.76, 26,388.06 and 11,161.28

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Solution

The fourth proportional to 19,120.76, 26,388.06 and 11,161.28 is: 15,403.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,120.76 : 26,388.06 = 11,161.28 : x
  2. Step 2: Convert to fraction form
    19,120.76/26,388.06 = 11,161.28/x
  3. Step 3: Cross multiply
    19,120.76x = 26,388.06 × 11,161.28
  4. Step 4: Simplify right side
    19,120.76x = 294,524,526.32
  5. Step 5: Solve for x
    x = 294,524,526.32/19,120.76
  6. Step 6: Final answer
    x = 15,403.39

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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.