Home / 19,990.12-29,979.94-5,946.36

Finding the Fourth Proportional to 19,990.12, 29,979.94 and 5,946.36

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Solution

The fourth proportional to 19,990.12, 29,979.94 and 5,946.36 is: 8,917.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.12 : 29,979.94 = 5,946.36 : x
  2. Step 2: Convert to fraction form
    19,990.12/29,979.94 = 5,946.36/x
  3. Step 3: Cross multiply
    19,990.12x = 29,979.94 × 5,946.36
  4. Step 4: Simplify right side
    19,990.12x = 178,271,516.02
  5. Step 5: Solve for x
    x = 178,271,516.02/19,990.12
  6. Step 6: Final answer
    x = 8,917.98

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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.