Home / 19,976.93-29,969.03-9,986.89

Finding the Fourth Proportional to 19,976.93, 29,969.03 and 9,986.89

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Solution

The fourth proportional to 19,976.93, 29,969.03 and 9,986.89 is: 14,982.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,976.93 : 29,969.03 = 9,986.89 : x
  2. Step 2: Convert to fraction form
    19,976.93/29,969.03 = 9,986.89/x
  3. Step 3: Cross multiply
    19,976.93x = 29,969.03 × 9,986.89
  4. Step 4: Simplify right side
    19,976.93x = 299,297,406.02
  5. Step 5: Solve for x
    x = 299,297,406.02/19,976.93
  6. Step 6: Final answer
    x = 14,982.16

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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.