Home / 13,619.73-20,419.21-7,041.72

Finding the Fourth Proportional to 13,619.73, 20,419.21 and 7,041.72

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Solution

The fourth proportional to 13,619.73, 20,419.21 and 7,041.72 is: 10,557.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.73 : 20,419.21 = 7,041.72 : x
  2. Step 2: Convert to fraction form
    13,619.73/20,419.21 = 7,041.72/x
  3. Step 3: Cross multiply
    13,619.73x = 20,419.21 × 7,041.72
  4. Step 4: Simplify right side
    13,619.73x = 143,786,359.44
  5. Step 5: Solve for x
    x = 143,786,359.44/13,619.73
  6. Step 6: Final answer
    x = 10,557.21

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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.