Home / 13,788.20-20,692.74-10,100.02

Finding the Fourth Proportional to 13,788.20, 20,692.74 and 10,100.02

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Solution

The fourth proportional to 13,788.20, 20,692.74 and 10,100.02 is: 15,157.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.20 : 20,692.74 = 10,100.02 : x
  2. Step 2: Convert to fraction form
    13,788.20/20,692.74 = 10,100.02/x
  3. Step 3: Cross multiply
    13,788.20x = 20,692.74 × 10,100.02
  4. Step 4: Simplify right side
    13,788.20x = 208,996,933.89
  5. Step 5: Solve for x
    x = 208,996,933.89/13,788.20
  6. Step 6: Final answer
    x = 15,157.67

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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.