Home / 20,165.79-27,829.44-11,213.67

Finding the Fourth Proportional to 20,165.79, 27,829.44 and 11,213.67

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Solution

The fourth proportional to 20,165.79, 27,829.44 and 11,213.67 is: 15,475.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.79 : 27,829.44 = 11,213.67 : x
  2. Step 2: Convert to fraction form
    20,165.79/27,829.44 = 11,213.67/x
  3. Step 3: Cross multiply
    20,165.79x = 27,829.44 × 11,213.67
  4. Step 4: Simplify right side
    20,165.79x = 312,070,156.44
  5. Step 5: Solve for x
    x = 312,070,156.44/20,165.79
  6. Step 6: Final answer
    x = 15,475.23

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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.