Home / 13,489.79-20,220.84-5,167.67

Finding the Fourth Proportional to 13,489.79, 20,220.84 and 5,167.67

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Solution

The fourth proportional to 13,489.79, 20,220.84 and 5,167.67 is: 7,746.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,489.79 : 20,220.84 = 5,167.67 : x
  2. Step 2: Convert to fraction form
    13,489.79/20,220.84 = 5,167.67/x
  3. Step 3: Cross multiply
    13,489.79x = 20,220.84 × 5,167.67
  4. Step 4: Simplify right side
    13,489.79x = 104,494,527.14
  5. Step 5: Solve for x
    x = 104,494,527.14/13,489.79
  6. Step 6: Final answer
    x = 7,746.20

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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.