Home / 21,023.85-29,014.35-12,850.96

Finding the Fourth Proportional to 21,023.85, 29,014.35 and 12,850.96

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Solution

The fourth proportional to 21,023.85, 29,014.35 and 12,850.96 is: 17,735.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,023.85 : 29,014.35 = 12,850.96 : x
  2. Step 2: Convert to fraction form
    21,023.85/29,014.35 = 12,850.96/x
  3. Step 3: Cross multiply
    21,023.85x = 29,014.35 × 12,850.96
  4. Step 4: Simplify right side
    21,023.85x = 372,862,251.28
  5. Step 5: Solve for x
    x = 372,862,251.28/21,023.85
  6. Step 6: Final answer
    x = 17,735.20

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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.