Home / 14,109.82-19,467.12-8,140.72

Finding the Fourth Proportional to 14,109.82, 19,467.12 and 8,140.72

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Solution

The fourth proportional to 14,109.82, 19,467.12 and 8,140.72 is: 11,231.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,109.82 : 19,467.12 = 8,140.72 : x
  2. Step 2: Convert to fraction form
    14,109.82/19,467.12 = 8,140.72/x
  3. Step 3: Cross multiply
    14,109.82x = 19,467.12 × 8,140.72
  4. Step 4: Simplify right side
    14,109.82x = 158,476,373.13
  5. Step 5: Solve for x
    x = 158,476,373.13/14,109.82
  6. Step 6: Final answer
    x = 11,231.64

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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.