Home / 14,228.89-21,343.34-3,840.64

Finding the Fourth Proportional to 14,228.89, 21,343.34 and 3,840.64

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Solution

The fourth proportional to 14,228.89, 21,343.34 and 3,840.64 is: 5,760.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,228.89 : 21,343.34 = 3,840.64 : x
  2. Step 2: Convert to fraction form
    14,228.89/21,343.34 = 3,840.64/x
  3. Step 3: Cross multiply
    14,228.89x = 21,343.34 × 3,840.64
  4. Step 4: Simplify right side
    14,228.89x = 81,972,085.34
  5. Step 5: Solve for x
    x = 81,972,085.34/14,228.89
  6. Step 6: Final answer
    x = 5,760.96

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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.