Home / 20,424.88-30,649.44-19,129.04

Finding the Fourth Proportional to 20,424.88, 30,649.44 and 19,129.04

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Solution

The fourth proportional to 20,424.88, 30,649.44 and 19,129.04 is: 28,704.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,424.88 : 30,649.44 = 19,129.04 : x
  2. Step 2: Convert to fraction form
    20,424.88/30,649.44 = 19,129.04/x
  3. Step 3: Cross multiply
    20,424.88x = 30,649.44 × 19,129.04
  4. Step 4: Simplify right side
    20,424.88x = 586,294,363.74
  5. Step 5: Solve for x
    x = 586,294,363.74/20,424.88
  6. Step 6: Final answer
    x = 28,704.91

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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.