Home / 20,668.96-28,529.58-19,611.01

Finding the Fourth Proportional to 20,668.96, 28,529.58 and 19,611.01

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Solution

The fourth proportional to 20,668.96, 28,529.58 and 19,611.01 is: 27,069.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.96 : 28,529.58 = 19,611.01 : x
  2. Step 2: Convert to fraction form
    20,668.96/28,529.58 = 19,611.01/x
  3. Step 3: Cross multiply
    20,668.96x = 28,529.58 × 19,611.01
  4. Step 4: Simplify right side
    20,668.96x = 559,493,878.68
  5. Step 5: Solve for x
    x = 559,493,878.68/20,668.96
  6. Step 6: Final answer
    x = 27,069.28

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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.