Home / 14,306.85-21,420.66-10,786.20

Finding the Fourth Proportional to 14,306.85, 21,420.66 and 10,786.20

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Solution

The fourth proportional to 14,306.85, 21,420.66 and 10,786.20 is: 16,149.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,306.85 : 21,420.66 = 10,786.20 : x
  2. Step 2: Convert to fraction form
    14,306.85/21,420.66 = 10,786.20/x
  3. Step 3: Cross multiply
    14,306.85x = 21,420.66 × 10,786.20
  4. Step 4: Simplify right side
    14,306.85x = 231,047,522.89
  5. Step 5: Solve for x
    x = 231,047,522.89/14,306.85
  6. Step 6: Final answer
    x = 16,149.43

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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.