Home / 21,998.08-30,350.72-13,047.04

Finding the Fourth Proportional to 21,998.08, 30,350.72 and 13,047.04

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Solution

The fourth proportional to 21,998.08, 30,350.72 and 13,047.04 is: 18,000.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998.08 : 30,350.72 = 13,047.04 : x
  2. Step 2: Convert to fraction form
    21,998.08/30,350.72 = 13,047.04/x
  3. Step 3: Cross multiply
    21,998.08x = 30,350.72 × 13,047.04
  4. Step 4: Simplify right side
    21,998.08x = 395,987,057.87
  5. Step 5: Solve for x
    x = 395,987,057.87/21,998.08
  6. Step 6: Final answer
    x = 18,000.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.