Home / 21,957.99-32,872.38-13,611.21

Finding the Fourth Proportional to 21,957.99, 32,872.38 and 13,611.21

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Solution

The fourth proportional to 21,957.99, 32,872.38 and 13,611.21 is: 20,376.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,957.99 : 32,872.38 = 13,611.21 : x
  2. Step 2: Convert to fraction form
    21,957.99/32,872.38 = 13,611.21/x
  3. Step 3: Cross multiply
    21,957.99x = 32,872.38 × 13,611.21
  4. Step 4: Simplify right side
    21,957.99x = 447,432,703.02
  5. Step 5: Solve for x
    x = 447,432,703.02/21,957.99
  6. Step 6: Final answer
    x = 20,376.77

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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.