Home / 13,911.08-20,765.57-12,883.19

Finding the Fourth Proportional to 13,911.08, 20,765.57 and 12,883.19

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Solution

The fourth proportional to 13,911.08, 20,765.57 and 12,883.19 is: 19,231.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,911.08 : 20,765.57 = 12,883.19 : x
  2. Step 2: Convert to fraction form
    13,911.08/20,765.57 = 12,883.19/x
  3. Step 3: Cross multiply
    13,911.08x = 20,765.57 × 12,883.19
  4. Step 4: Simplify right side
    13,911.08x = 267,526,615.52
  5. Step 5: Solve for x
    x = 267,526,615.52/13,911.08
  6. Step 6: Final answer
    x = 19,231.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.