Home / 13,428.79-20,144.09-3,567.85

Finding the Fourth Proportional to 13,428.79, 20,144.09 and 3,567.85

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Solution

The fourth proportional to 13,428.79, 20,144.09 and 3,567.85 is: 5,352.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.79 : 20,144.09 = 3,567.85 : x
  2. Step 2: Convert to fraction form
    13,428.79/20,144.09 = 3,567.85/x
  3. Step 3: Cross multiply
    13,428.79x = 20,144.09 × 3,567.85
  4. Step 4: Simplify right side
    13,428.79x = 71,871,050.07
  5. Step 5: Solve for x
    x = 71,871,050.07/13,428.79
  6. Step 6: Final answer
    x = 5,352.01

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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.