Home / 14,074.72-21,121.40-7,505.64

Finding the Fourth Proportional to 14,074.72, 21,121.40 and 7,505.64

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Solution

The fourth proportional to 14,074.72, 21,121.40 and 7,505.64 is: 11,263.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,074.72 : 21,121.40 = 7,505.64 : x
  2. Step 2: Convert to fraction form
    14,074.72/21,121.40 = 7,505.64/x
  3. Step 3: Cross multiply
    14,074.72x = 21,121.40 × 7,505.64
  4. Step 4: Simplify right side
    14,074.72x = 158,529,624.70
  5. Step 5: Solve for x
    x = 158,529,624.70/14,074.72
  6. Step 6: Final answer
    x = 11,263.43

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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.