Home / 19,418.18-26,796.83-10,921.70

Finding the Fourth Proportional to 19,418.18, 26,796.83 and 10,921.70

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Solution

The fourth proportional to 19,418.18, 26,796.83 and 10,921.70 is: 15,071.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,418.18 : 26,796.83 = 10,921.70 : x
  2. Step 2: Convert to fraction form
    19,418.18/26,796.83 = 10,921.70/x
  3. Step 3: Cross multiply
    19,418.18x = 26,796.83 × 10,921.70
  4. Step 4: Simplify right side
    19,418.18x = 292,666,749.62
  5. Step 5: Solve for x
    x = 292,666,749.62/19,418.18
  6. Step 6: Final answer
    x = 15,071.79

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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.