Home / 13,243.85-18,254.57-12,893.28

Finding the Fourth Proportional to 13,243.85, 18,254.57 and 12,893.28

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Solution

The fourth proportional to 13,243.85, 18,254.57 and 12,893.28 is: 17,771.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,243.85 : 18,254.57 = 12,893.28 : x
  2. Step 2: Convert to fraction form
    13,243.85/18,254.57 = 12,893.28/x
  3. Step 3: Cross multiply
    13,243.85x = 18,254.57 × 12,893.28
  4. Step 4: Simplify right side
    13,243.85x = 235,361,149.37
  5. Step 5: Solve for x
    x = 235,361,149.37/13,243.85
  6. Step 6: Final answer
    x = 17,771.35

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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.