Home / 13,381.68-18,475.74-8,353.56

Finding the Fourth Proportional to 13,381.68, 18,475.74 and 8,353.56

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Solution

The fourth proportional to 13,381.68, 18,475.74 and 8,353.56 is: 11,533.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.68 : 18,475.74 = 8,353.56 : x
  2. Step 2: Convert to fraction form
    13,381.68/18,475.74 = 8,353.56/x
  3. Step 3: Cross multiply
    13,381.68x = 18,475.74 × 8,353.56
  4. Step 4: Simplify right side
    13,381.68x = 154,338,202.63
  5. Step 5: Solve for x
    x = 154,338,202.63/13,381.68
  6. Step 6: Final answer
    x = 11,533.54

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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.