Home / 13,883.02-20,815.11-9,188.57

Finding the Fourth Proportional to 13,883.02, 20,815.11 and 9,188.57

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Solution

The fourth proportional to 13,883.02, 20,815.11 and 9,188.57 is: 13,776.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,883.02 : 20,815.11 = 9,188.57 : x
  2. Step 2: Convert to fraction form
    13,883.02/20,815.11 = 9,188.57/x
  3. Step 3: Cross multiply
    13,883.02x = 20,815.11 × 9,188.57
  4. Step 4: Simplify right side
    13,883.02x = 191,261,147.33
  5. Step 5: Solve for x
    x = 191,261,147.33/13,883.02
  6. Step 6: Final answer
    x = 13,776.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.