Home / 13,922.74-20,878.51-5,158.34

Finding the Fourth Proportional to 13,922.74, 20,878.51 and 5,158.34

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Solution

The fourth proportional to 13,922.74, 20,878.51 and 5,158.34 is: 7,735.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,922.74 : 20,878.51 = 5,158.34 : x
  2. Step 2: Convert to fraction form
    13,922.74/20,878.51 = 5,158.34/x
  3. Step 3: Cross multiply
    13,922.74x = 20,878.51 × 5,158.34
  4. Step 4: Simplify right side
    13,922.74x = 107,698,453.27
  5. Step 5: Solve for x
    x = 107,698,453.27/13,922.74
  6. Step 6: Final answer
    x = 7,735.44

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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.