Home / 13,687.05-20,511.96-5,783.03

Finding the Fourth Proportional to 13,687.05, 20,511.96 and 5,783.03

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Solution

The fourth proportional to 13,687.05, 20,511.96 and 5,783.03 is: 8,666.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.05 : 20,511.96 = 5,783.03 : x
  2. Step 2: Convert to fraction form
    13,687.05/20,511.96 = 5,783.03/x
  3. Step 3: Cross multiply
    13,687.05x = 20,511.96 × 5,783.03
  4. Step 4: Simplify right side
    13,687.05x = 118,621,177.48
  5. Step 5: Solve for x
    x = 118,621,177.48/13,687.05
  6. Step 6: Final answer
    x = 8,666.67

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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.