Home / 21,621.96-32,415.66-8,471.88

Finding the Fourth Proportional to 21,621.96, 32,415.66 and 8,471.88

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Solution

The fourth proportional to 21,621.96, 32,415.66 and 8,471.88 is: 12,701.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,621.96 : 32,415.66 = 8,471.88 : x
  2. Step 2: Convert to fraction form
    21,621.96/32,415.66 = 8,471.88/x
  3. Step 3: Cross multiply
    21,621.96x = 32,415.66 × 8,471.88
  4. Step 4: Simplify right side
    21,621.96x = 274,621,581.64
  5. Step 5: Solve for x
    x = 274,621,581.64/21,621.96
  6. Step 6: Final answer
    x = 12,701.05

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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.