Home / 19,211.61-28,826.31-8,120.88

Finding the Fourth Proportional to 19,211.61, 28,826.31 and 8,120.88

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Solution

The fourth proportional to 19,211.61, 28,826.31 and 8,120.88 is: 12,185.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,211.61 : 28,826.31 = 8,120.88 : x
  2. Step 2: Convert to fraction form
    19,211.61/28,826.31 = 8,120.88/x
  3. Step 3: Cross multiply
    19,211.61x = 28,826.31 × 8,120.88
  4. Step 4: Simplify right side
    19,211.61x = 234,095,004.35
  5. Step 5: Solve for x
    x = 234,095,004.35/19,211.61
  6. Step 6: Final answer
    x = 12,185.08

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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.