Home / 20,833.22-28,749.72-19,138.76

Finding the Fourth Proportional to 20,833.22, 28,749.72 and 19,138.76

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Solution

The fourth proportional to 20,833.22, 28,749.72 and 19,138.76 is: 26,411.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.22 : 28,749.72 = 19,138.76 : x
  2. Step 2: Convert to fraction form
    20,833.22/28,749.72 = 19,138.76/x
  3. Step 3: Cross multiply
    20,833.22x = 28,749.72 × 19,138.76
  4. Step 4: Simplify right side
    20,833.22x = 550,233,991.15
  5. Step 5: Solve for x
    x = 550,233,991.15/20,833.22
  6. Step 6: Final answer
    x = 26,411.38

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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.