Home / 13,451.81-20,170.98-5,015.45

Finding the Fourth Proportional to 13,451.81, 20,170.98 and 5,015.45

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Solution

The fourth proportional to 13,451.81, 20,170.98 and 5,015.45 is: 7,520.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,451.81 : 20,170.98 = 5,015.45 : x
  2. Step 2: Convert to fraction form
    13,451.81/20,170.98 = 5,015.45/x
  3. Step 3: Cross multiply
    13,451.81x = 20,170.98 × 5,015.45
  4. Step 4: Simplify right side
    13,451.81x = 101,166,606.17
  5. Step 5: Solve for x
    x = 101,166,606.17/13,451.81
  6. Step 6: Final answer
    x = 7,520.67

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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.