Home / 19,986.07-29,979.20-5,193.94

Finding the Fourth Proportional to 19,986.07, 29,979.20 and 5,193.94

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Solution

The fourth proportional to 19,986.07, 29,979.20 and 5,193.94 is: 7,790.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,986.07 : 29,979.20 = 5,193.94 : x
  2. Step 2: Convert to fraction form
    19,986.07/29,979.20 = 5,193.94/x
  3. Step 3: Cross multiply
    19,986.07x = 29,979.20 × 5,193.94
  4. Step 4: Simplify right side
    19,986.07x = 155,710,166.05
  5. Step 5: Solve for x
    x = 155,710,166.05/19,986.07
  6. Step 6: Final answer
    x = 7,790.93

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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.