Home / 19,219.68-28,830.74-8,124.30

Finding the Fourth Proportional to 19,219.68, 28,830.74 and 8,124.30

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Solution

The fourth proportional to 19,219.68, 28,830.74 and 8,124.30 is: 12,186.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,219.68 : 28,830.74 = 8,124.30 : x
  2. Step 2: Convert to fraction form
    19,219.68/28,830.74 = 8,124.30/x
  3. Step 3: Cross multiply
    19,219.68x = 28,830.74 × 8,124.30
  4. Step 4: Simplify right side
    19,219.68x = 234,229,540.36
  5. Step 5: Solve for x
    x = 234,229,540.36/19,219.68
  6. Step 6: Final answer
    x = 12,186.96

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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.