Home / 13,686.84-20,533.33-4,921.75

Finding the Fourth Proportional to 13,686.84, 20,533.33 and 4,921.75

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Solution

The fourth proportional to 13,686.84, 20,533.33 and 4,921.75 is: 7,383.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,686.84 : 20,533.33 = 4,921.75 : x
  2. Step 2: Convert to fraction form
    13,686.84/20,533.33 = 4,921.75/x
  3. Step 3: Cross multiply
    13,686.84x = 20,533.33 × 4,921.75
  4. Step 4: Simplify right side
    13,686.84x = 101,059,916.93
  5. Step 5: Solve for x
    x = 101,059,916.93/13,686.84
  6. Step 6: Final answer
    x = 7,383.73

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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.