Home / 13,853.70-19,128.15-8,556.03

Finding the Fourth Proportional to 13,853.70, 19,128.15 and 8,556.03

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Solution

The fourth proportional to 13,853.70, 19,128.15 and 8,556.03 is: 11,813.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,853.70 : 19,128.15 = 8,556.03 : x
  2. Step 2: Convert to fraction form
    13,853.70/19,128.15 = 8,556.03/x
  3. Step 3: Cross multiply
    13,853.70x = 19,128.15 × 8,556.03
  4. Step 4: Simplify right side
    13,853.70x = 163,661,025.24
  5. Step 5: Solve for x
    x = 163,661,025.24/13,853.70
  6. Step 6: Final answer
    x = 11,813.52

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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.