Home / 14,140.45-21,231.60-7,912.90

Finding the Fourth Proportional to 14,140.45, 21,231.60 and 7,912.90

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Solution

The fourth proportional to 14,140.45, 21,231.60 and 7,912.90 is: 11,881.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,140.45 : 21,231.60 = 7,912.90 : x
  2. Step 2: Convert to fraction form
    14,140.45/21,231.60 = 7,912.90/x
  3. Step 3: Cross multiply
    14,140.45x = 21,231.60 × 7,912.90
  4. Step 4: Simplify right side
    14,140.45x = 168,003,527.64
  5. Step 5: Solve for x
    x = 168,003,527.64/14,140.45
  6. Step 6: Final answer
    x = 11,881.06

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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.