Home / 21,541.08-32,311.62-12,185.58

Finding the Fourth Proportional to 21,541.08, 32,311.62 and 12,185.58

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Solution

The fourth proportional to 21,541.08, 32,311.62 and 12,185.58 is: 18,278.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,541.08 : 32,311.62 = 12,185.58 : x
  2. Step 2: Convert to fraction form
    21,541.08/32,311.62 = 12,185.58/x
  3. Step 3: Cross multiply
    21,541.08x = 32,311.62 × 12,185.58
  4. Step 4: Simplify right side
    21,541.08x = 393,735,830.44
  5. Step 5: Solve for x
    x = 393,735,830.44/21,541.08
  6. Step 6: Final answer
    x = 18,278.37

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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.