Home / 21,998.10-32,975.55-19,665.30

Finding the Fourth Proportional to 21,998.10, 32,975.55 and 19,665.30

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Solution

The fourth proportional to 21,998.10, 32,975.55 and 19,665.30 is: 29,478.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998.10 : 32,975.55 = 19,665.30 : x
  2. Step 2: Convert to fraction form
    21,998.10/32,975.55 = 19,665.30/x
  3. Step 3: Cross multiply
    21,998.10x = 32,975.55 × 19,665.30
  4. Step 4: Simplify right side
    21,998.10x = 648,474,083.42
  5. Step 5: Solve for x
    x = 648,474,083.42/21,998.10
  6. Step 6: Final answer
    x = 29,478.64

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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.