Home / 21,357.64-32,025.99-12,475.20

Finding the Fourth Proportional to 21,357.64, 32,025.99 and 12,475.20

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Solution

The fourth proportional to 21,357.64, 32,025.99 and 12,475.20 is: 18,706.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,357.64 : 32,025.99 = 12,475.20 : x
  2. Step 2: Convert to fraction form
    21,357.64/32,025.99 = 12,475.20/x
  3. Step 3: Cross multiply
    21,357.64x = 32,025.99 × 12,475.20
  4. Step 4: Simplify right side
    21,357.64x = 399,530,630.45
  5. Step 5: Solve for x
    x = 399,530,630.45/21,357.64
  6. Step 6: Final answer
    x = 18,706.68

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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.