Home / 21,020.24-31,533.60-7,166

Finding the Fourth Proportional to 21,020.24, 31,533.60 and 7,166

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Solution

The fourth proportional to 21,020.24, 31,533.60 and 7,166 is: 10,750.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.24 : 31,533.60 = 7,166 : x
  2. Step 2: Convert to fraction form
    21,020.24/31,533.60 = 7,166/x
  3. Step 3: Cross multiply
    21,020.24x = 31,533.60 × 7,166
  4. Step 4: Simplify right side
    21,020.24x = 225,969,777.60
  5. Step 5: Solve for x
    x = 225,969,777.60/21,020.24
  6. Step 6: Final answer
    x = 10,750.10

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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.