Home / 18,985.99-28,478.99-14,819.75

Finding the Fourth Proportional to 18,985.99, 28,478.99 and 14,819.75

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Solution

The fourth proportional to 18,985.99, 28,478.99 and 14,819.75 is: 22,229.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,985.99 : 28,478.99 = 14,819.75 : x
  2. Step 2: Convert to fraction form
    18,985.99/28,478.99 = 14,819.75/x
  3. Step 3: Cross multiply
    18,985.99x = 28,478.99 × 14,819.75
  4. Step 4: Simplify right side
    18,985.99x = 422,051,512.05
  5. Step 5: Solve for x
    x = 422,051,512.05/18,985.99
  6. Step 6: Final answer
    x = 22,229.63

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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.