Home / 15,190.11-20,962.85-8,816.22

Finding the Fourth Proportional to 15,190.11, 20,962.85 and 8,816.22

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Solution

The fourth proportional to 15,190.11, 20,962.85 and 8,816.22 is: 12,166.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,190.11 : 20,962.85 = 8,816.22 : x
  2. Step 2: Convert to fraction form
    15,190.11/20,962.85 = 8,816.22/x
  3. Step 3: Cross multiply
    15,190.11x = 20,962.85 × 8,816.22
  4. Step 4: Simplify right side
    15,190.11x = 184,813,097.43
  5. Step 5: Solve for x
    x = 184,813,097.43/15,190.11
  6. Step 6: Final answer
    x = 12,166.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.