Home / 13,408.78-20,106.68-4,047.06

Finding the Fourth Proportional to 13,408.78, 20,106.68 and 4,047.06

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Solution

The fourth proportional to 13,408.78, 20,106.68 and 4,047.06 is: 6,068.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.78 : 20,106.68 = 4,047.06 : x
  2. Step 2: Convert to fraction form
    13,408.78/20,106.68 = 4,047.06/x
  3. Step 3: Cross multiply
    13,408.78x = 20,106.68 × 4,047.06
  4. Step 4: Simplify right side
    13,408.78x = 81,372,940.36
  5. Step 5: Solve for x
    x = 81,372,940.36/13,408.78
  6. Step 6: Final answer
    x = 6,068.63

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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.