Home / 13,756.03-18,984.90-12,911.56

Finding the Fourth Proportional to 13,756.03, 18,984.90 and 12,911.56

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Solution

The fourth proportional to 13,756.03, 18,984.90 and 12,911.56 is: 17,819.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.03 : 18,984.90 = 12,911.56 : x
  2. Step 2: Convert to fraction form
    13,756.03/18,984.90 = 12,911.56/x
  3. Step 3: Cross multiply
    13,756.03x = 18,984.90 × 12,911.56
  4. Step 4: Simplify right side
    13,756.03x = 245,124,675.44
  5. Step 5: Solve for x
    x = 245,124,675.44/13,756.03
  6. Step 6: Final answer
    x = 17,819.43

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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.