Home / 20,360.52-28,100.26-11,411.56

Finding the Fourth Proportional to 20,360.52, 28,100.26 and 11,411.56

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Solution

The fourth proportional to 20,360.52, 28,100.26 and 11,411.56 is: 15,749.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,360.52 : 28,100.26 = 11,411.56 : x
  2. Step 2: Convert to fraction form
    20,360.52/28,100.26 = 11,411.56/x
  3. Step 3: Cross multiply
    20,360.52x = 28,100.26 × 11,411.56
  4. Step 4: Simplify right side
    20,360.52x = 320,667,803.01
  5. Step 5: Solve for x
    x = 320,667,803.01/20,360.52
  6. Step 6: Final answer
    x = 15,749.49

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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.