Home / 28,927.40-43,318.20-21,491.60

Finding the Fourth Proportional to 28,927.40, 43,318.20 and 21,491.60

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Solution

The fourth proportional to 28,927.40, 43,318.20 and 21,491.60 is: 32,183.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,927.40 : 43,318.20 = 21,491.60 : x
  2. Step 2: Convert to fraction form
    28,927.40/43,318.20 = 21,491.60/x
  3. Step 3: Cross multiply
    28,927.40x = 43,318.20 × 21,491.60
  4. Step 4: Simplify right side
    28,927.40x = 930,977,427.12
  5. Step 5: Solve for x
    x = 930,977,427.12/28,927.40
  6. Step 6: Final answer
    x = 32,183.24

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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.