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Finding the Fourth Proportional to 13,775.76, 20,663.37 and 4,541.76

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Solution

The fourth proportional to 13,775.76, 20,663.37 and 4,541.76 is: 6,812.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,775.76 : 20,663.37 = 4,541.76 : x
  2. Step 2: Convert to fraction form
    13,775.76/20,663.37 = 4,541.76/x
  3. Step 3: Cross multiply
    13,775.76x = 20,663.37 × 4,541.76
  4. Step 4: Simplify right side
    13,775.76x = 93,848,067.33
  5. Step 5: Solve for x
    x = 93,848,067.33/13,775.76
  6. Step 6: Final answer
    x = 6,812.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.