Home / 20,478.24-30,699.44-16,997.20

Finding the Fourth Proportional to 20,478.24, 30,699.44 and 16,997.20

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Solution

The fourth proportional to 20,478.24, 30,699.44 and 16,997.20 is: 25,480.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,478.24 : 30,699.44 = 16,997.20 : x
  2. Step 2: Convert to fraction form
    20,478.24/30,699.44 = 16,997.20/x
  3. Step 3: Cross multiply
    20,478.24x = 30,699.44 × 16,997.20
  4. Step 4: Simplify right side
    20,478.24x = 521,804,521.57
  5. Step 5: Solve for x
    x = 521,804,521.57/20,478.24
  6. Step 6: Final answer
    x = 25,480.93

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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.