Home / 20,669.46-28,530.27-19,611.51

Finding the Fourth Proportional to 20,669.46, 28,530.27 and 19,611.51

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Solution

The fourth proportional to 20,669.46, 28,530.27 and 19,611.51 is: 27,069.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.46 : 28,530.27 = 19,611.51 : x
  2. Step 2: Convert to fraction form
    20,669.46/28,530.27 = 19,611.51/x
  3. Step 3: Cross multiply
    20,669.46x = 28,530.27 × 19,611.51
  4. Step 4: Simplify right side
    20,669.46x = 559,521,675.41
  5. Step 5: Solve for x
    x = 559,521,675.41/20,669.46
  6. Step 6: Final answer
    x = 27,069.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.