Home / 14,078.26-19,430.06-8,108.78

Finding the Fourth Proportional to 14,078.26, 19,430.06 and 8,108.78

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Solution

The fourth proportional to 14,078.26, 19,430.06 and 8,108.78 is: 11,191.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,078.26 : 19,430.06 = 8,108.78 : x
  2. Step 2: Convert to fraction form
    14,078.26/19,430.06 = 8,108.78/x
  3. Step 3: Cross multiply
    14,078.26x = 19,430.06 × 8,108.78
  4. Step 4: Simplify right side
    14,078.26x = 157,554,081.93
  5. Step 5: Solve for x
    x = 157,554,081.93/14,078.26
  6. Step 6: Final answer
    x = 11,191.30

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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.