Home / 13,747.50-18,971.60-8,442.27

Finding the Fourth Proportional to 13,747.50, 18,971.60 and 8,442.27

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Solution

The fourth proportional to 13,747.50, 18,971.60 and 8,442.27 is: 11,650.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.50 : 18,971.60 = 8,442.27 : x
  2. Step 2: Convert to fraction form
    13,747.50/18,971.60 = 8,442.27/x
  3. Step 3: Cross multiply
    13,747.50x = 18,971.60 × 8,442.27
  4. Step 4: Simplify right side
    13,747.50x = 160,163,327.32
  5. Step 5: Solve for x
    x = 160,163,327.32/13,747.50
  6. Step 6: Final answer
    x = 11,650.36

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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.