Home / 21,898.40-32,847.60-7,107.80

Finding the Fourth Proportional to 21,898.40, 32,847.60 and 7,107.80

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Solution

The fourth proportional to 21,898.40, 32,847.60 and 7,107.80 is: 10,661.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,898.40 : 32,847.60 = 7,107.80 : x
  2. Step 2: Convert to fraction form
    21,898.40/32,847.60 = 7,107.80/x
  3. Step 3: Cross multiply
    21,898.40x = 32,847.60 × 7,107.80
  4. Step 4: Simplify right side
    21,898.40x = 233,474,171.28
  5. Step 5: Solve for x
    x = 233,474,171.28/21,898.40
  6. Step 6: Final answer
    x = 10,661.70

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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.