Home / 13,771.40-19,004.60-8,106.36

Finding the Fourth Proportional to 13,771.40, 19,004.60 and 8,106.36

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Solution

The fourth proportional to 13,771.40, 19,004.60 and 8,106.36 is: 11,186.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,771.40 : 19,004.60 = 8,106.36 : x
  2. Step 2: Convert to fraction form
    13,771.40/19,004.60 = 8,106.36/x
  3. Step 3: Cross multiply
    13,771.40x = 19,004.60 × 8,106.36
  4. Step 4: Simplify right side
    13,771.40x = 154,058,129.26
  5. Step 5: Solve for x
    x = 154,058,129.26/13,771.40
  6. Step 6: Final answer
    x = 11,186.82

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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.