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Finding the Fourth Proportional to 21,912.99, 32,859.73 and 13,592.67

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Solution

The fourth proportional to 21,912.99, 32,859.73 and 13,592.67 is: 20,382.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,912.99 : 32,859.73 = 13,592.67 : x
  2. Step 2: Convert to fraction form
    21,912.99/32,859.73 = 13,592.67/x
  3. Step 3: Cross multiply
    21,912.99x = 32,859.73 × 13,592.67
  4. Step 4: Simplify right side
    21,912.99x = 446,651,466.18
  5. Step 5: Solve for x
    x = 446,651,466.18/21,912.99
  6. Step 6: Final answer
    x = 20,382.95

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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.