Home / 13,141.36-18,128.88-8,893.92

Finding the Fourth Proportional to 13,141.36, 18,128.88 and 8,893.92

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Solution

The fourth proportional to 13,141.36, 18,128.88 and 8,893.92 is: 12,269.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.36 : 18,128.88 = 8,893.92 : x
  2. Step 2: Convert to fraction form
    13,141.36/18,128.88 = 8,893.92/x
  3. Step 3: Cross multiply
    13,141.36x = 18,128.88 × 8,893.92
  4. Step 4: Simplify right side
    13,141.36x = 161,236,808.41
  5. Step 5: Solve for x
    x = 161,236,808.41/13,141.36
  6. Step 6: Final answer
    x = 12,269.42

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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.