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Finding the Fourth Proportional to 13,862.68, 20,800.50 and 8,024.20

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Solution

The fourth proportional to 13,862.68, 20,800.50 and 8,024.20 is: 12,040.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,862.68 : 20,800.50 = 8,024.20 : x
  2. Step 2: Convert to fraction form
    13,862.68/20,800.50 = 8,024.20/x
  3. Step 3: Cross multiply
    13,862.68x = 20,800.50 × 8,024.20
  4. Step 4: Simplify right side
    13,862.68x = 166,907,372.10
  5. Step 5: Solve for x
    x = 166,907,372.10/13,862.68
  6. Step 6: Final answer
    x = 12,040.05

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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.