Home / 14,138.30-21,183.15-9,205.40

Finding the Fourth Proportional to 14,138.30, 21,183.15 and 9,205.40

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Solution

The fourth proportional to 14,138.30, 21,183.15 and 9,205.40 is: 13,792.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.30 : 21,183.15 = 9,205.40 : x
  2. Step 2: Convert to fraction form
    14,138.30/21,183.15 = 9,205.40/x
  3. Step 3: Cross multiply
    14,138.30x = 21,183.15 × 9,205.40
  4. Step 4: Simplify right side
    14,138.30x = 194,999,369.01
  5. Step 5: Solve for x
    x = 194,999,369.01/14,138.30
  6. Step 6: Final answer
    x = 13,792.28

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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.