Home / 21,640.88-32,466.60-12,763.76

Finding the Fourth Proportional to 21,640.88, 32,466.60 and 12,763.76

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Solution

The fourth proportional to 21,640.88, 32,466.60 and 12,763.76 is: 19,148.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,640.88 : 32,466.60 = 12,763.76 : x
  2. Step 2: Convert to fraction form
    21,640.88/32,466.60 = 12,763.76/x
  3. Step 3: Cross multiply
    21,640.88x = 32,466.60 × 12,763.76
  4. Step 4: Simplify right side
    21,640.88x = 414,395,890.42
  5. Step 5: Solve for x
    x = 414,395,890.42/21,640.88
  6. Step 6: Final answer
    x = 19,148.75

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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.