Home / 20,566.08-28,436.40-19,620

Finding the Fourth Proportional to 20,566.08, 28,436.40 and 19,620

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Solution

The fourth proportional to 20,566.08, 28,436.40 and 19,620 is: 27,128.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.08 : 28,436.40 = 19,620 : x
  2. Step 2: Convert to fraction form
    20,566.08/28,436.40 = 19,620/x
  3. Step 3: Cross multiply
    20,566.08x = 28,436.40 × 19,620
  4. Step 4: Simplify right side
    20,566.08x = 557,922,168
  5. Step 5: Solve for x
    x = 557,922,168/20,566.08
  6. Step 6: Final answer
    x = 27,128.27

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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.