Home / 19,257.30-28,929.15-18,738.90

Finding the Fourth Proportional to 19,257.30, 28,929.15 and 18,738.90

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Solution

The fourth proportional to 19,257.30, 28,929.15 and 18,738.90 is: 28,150.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,257.30 : 28,929.15 = 18,738.90 : x
  2. Step 2: Convert to fraction form
    19,257.30/28,929.15 = 18,738.90/x
  3. Step 3: Cross multiply
    19,257.30x = 28,929.15 × 18,738.90
  4. Step 4: Simplify right side
    19,257.30x = 542,100,448.94
  5. Step 5: Solve for x
    x = 542,100,448.94/19,257.30
  6. Step 6: Final answer
    x = 28,150.39

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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.