Home / 20,507.92-28,300.93-11,076.49

Finding the Fourth Proportional to 20,507.92, 28,300.93 and 11,076.49

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Solution

The fourth proportional to 20,507.92, 28,300.93 and 11,076.49 is: 15,285.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,507.92 : 28,300.93 = 11,076.49 : x
  2. Step 2: Convert to fraction form
    20,507.92/28,300.93 = 11,076.49/x
  3. Step 3: Cross multiply
    20,507.92x = 28,300.93 × 11,076.49
  4. Step 4: Simplify right side
    20,507.92x = 313,474,826.63
  5. Step 5: Solve for x
    x = 313,474,826.63/20,507.92
  6. Step 6: Final answer
    x = 15,285.55

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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.