Home / 13,089.05-18,053.74-8,611.37

Finding the Fourth Proportional to 13,089.05, 18,053.74 and 8,611.37

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Solution

The fourth proportional to 13,089.05, 18,053.74 and 8,611.37 is: 11,877.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,089.05 : 18,053.74 = 8,611.37 : x
  2. Step 2: Convert to fraction form
    13,089.05/18,053.74 = 8,611.37/x
  3. Step 3: Cross multiply
    13,089.05x = 18,053.74 × 8,611.37
  4. Step 4: Simplify right side
    13,089.05x = 155,467,435.02
  5. Step 5: Solve for x
    x = 155,467,435.02/13,089.05
  6. Step 6: Final answer
    x = 11,877.67

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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.