Home / 13,975.40-20,930.70-8,726.60

Finding the Fourth Proportional to 13,975.40, 20,930.70 and 8,726.60

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Solution

The fourth proportional to 13,975.40, 20,930.70 and 8,726.60 is: 13,069.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,975.40 : 20,930.70 = 8,726.60 : x
  2. Step 2: Convert to fraction form
    13,975.40/20,930.70 = 8,726.60/x
  3. Step 3: Cross multiply
    13,975.40x = 20,930.70 × 8,726.60
  4. Step 4: Simplify right side
    13,975.40x = 182,653,846.62
  5. Step 5: Solve for x
    x = 182,653,846.62/13,975.40
  6. Step 6: Final answer
    x = 13,069.67

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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.