Home / 19,980.24-29,975.30-5,940.21

Finding the Fourth Proportional to 19,980.24, 29,975.30 and 5,940.21

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Solution

The fourth proportional to 19,980.24, 29,975.30 and 5,940.21 is: 8,911.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.24 : 29,975.30 = 5,940.21 : x
  2. Step 2: Convert to fraction form
    19,980.24/29,975.30 = 5,940.21/x
  3. Step 3: Cross multiply
    19,980.24x = 29,975.30 × 5,940.21
  4. Step 4: Simplify right side
    19,980.24x = 178,059,576.81
  5. Step 5: Solve for x
    x = 178,059,576.81/19,980.24
  6. Step 6: Final answer
    x = 8,911.78

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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.