Home / 13,187.45-19,777.07-4,420.31

Finding the Fourth Proportional to 13,187.45, 19,777.07 and 4,420.31

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Solution

The fourth proportional to 13,187.45, 19,777.07 and 4,420.31 is: 6,629.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.45 : 19,777.07 = 4,420.31 : x
  2. Step 2: Convert to fraction form
    13,187.45/19,777.07 = 4,420.31/x
  3. Step 3: Cross multiply
    13,187.45x = 19,777.07 × 4,420.31
  4. Step 4: Simplify right side
    13,187.45x = 87,420,840.79
  5. Step 5: Solve for x
    x = 87,420,840.79/13,187.45
  6. Step 6: Final answer
    x = 6,629.09

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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.