Home / 14,138.19-19,509.32-8,169.03

Finding the Fourth Proportional to 14,138.19, 19,509.32 and 8,169.03

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Solution

The fourth proportional to 14,138.19, 19,509.32 and 8,169.03 is: 11,272.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.19 : 19,509.32 = 8,169.03 : x
  2. Step 2: Convert to fraction form
    14,138.19/19,509.32 = 8,169.03/x
  3. Step 3: Cross multiply
    14,138.19x = 19,509.32 × 8,169.03
  4. Step 4: Simplify right side
    14,138.19x = 159,372,240.78
  5. Step 5: Solve for x
    x = 159,372,240.78/14,138.19
  6. Step 6: Final answer
    x = 11,272.46

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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.