Home / 13,720.68-20,562.57-10,005.54

Finding the Fourth Proportional to 13,720.68, 20,562.57 and 10,005.54

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Solution

The fourth proportional to 13,720.68, 20,562.57 and 10,005.54 is: 14,994.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.68 : 20,562.57 = 10,005.54 : x
  2. Step 2: Convert to fraction form
    13,720.68/20,562.57 = 10,005.54/x
  3. Step 3: Cross multiply
    13,720.68x = 20,562.57 × 10,005.54
  4. Step 4: Simplify right side
    13,720.68x = 205,739,616.64
  5. Step 5: Solve for x
    x = 205,739,616.64/13,720.68
  6. Step 6: Final answer
    x = 14,994.86

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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.