Home / 21,399.72-32,099.58-5,819.64

Finding the Fourth Proportional to 21,399.72, 32,099.58 and 5,819.64

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Solution

The fourth proportional to 21,399.72, 32,099.58 and 5,819.64 is: 8,729.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,399.72 : 32,099.58 = 5,819.64 : x
  2. Step 2: Convert to fraction form
    21,399.72/32,099.58 = 5,819.64/x
  3. Step 3: Cross multiply
    21,399.72x = 32,099.58 × 5,819.64
  4. Step 4: Simplify right side
    21,399.72x = 186,807,999.75
  5. Step 5: Solve for x
    x = 186,807,999.75/21,399.72
  6. Step 6: Final answer
    x = 8,729.46

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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.