Home / 28,651.68-39,557.76-19,696.32

Finding the Fourth Proportional to 28,651.68, 39,557.76 and 19,696.32

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Solution

The fourth proportional to 28,651.68, 39,557.76 and 19,696.32 is: 27,193.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,651.68 : 39,557.76 = 19,696.32 : x
  2. Step 2: Convert to fraction form
    28,651.68/39,557.76 = 19,696.32/x
  3. Step 3: Cross multiply
    28,651.68x = 39,557.76 × 19,696.32
  4. Step 4: Simplify right side
    28,651.68x = 779,142,299.44
  5. Step 5: Solve for x
    x = 779,142,299.44/28,651.68
  6. Step 6: Final answer
    x = 27,193.60

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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.