Home / 14,200.10-21,161.72-13,772.55

Finding the Fourth Proportional to 14,200.10, 21,161.72 and 13,772.55

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Solution

The fourth proportional to 14,200.10, 21,161.72 and 13,772.55 is: 20,524.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,200.10 : 21,161.72 = 13,772.55 : x
  2. Step 2: Convert to fraction form
    14,200.10/21,161.72 = 13,772.55/x
  3. Step 3: Cross multiply
    14,200.10x = 21,161.72 × 13,772.55
  4. Step 4: Simplify right side
    14,200.10x = 291,450,777.92
  5. Step 5: Solve for x
    x = 291,450,777.92/14,200.10
  6. Step 6: Final answer
    x = 20,524.57

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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.