Home / 19,986.04-29,979.01-18,768.11

Finding the Fourth Proportional to 19,986.04, 29,979.01 and 18,768.11

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Solution

The fourth proportional to 19,986.04, 29,979.01 and 18,768.11 is: 28,152.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,986.04 : 29,979.01 = 18,768.11 : x
  2. Step 2: Convert to fraction form
    19,986.04/29,979.01 = 18,768.11/x
  3. Step 3: Cross multiply
    19,986.04x = 29,979.01 × 18,768.11
  4. Step 4: Simplify right side
    19,986.04x = 562,649,230.94
  5. Step 5: Solve for x
    x = 562,649,230.94/19,986.04
  6. Step 6: Final answer
    x = 28,152.11

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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.