Home / 19,221.20-28,826.40-6,077.60

Finding the Fourth Proportional to 19,221.20, 28,826.40 and 6,077.60

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Solution

The fourth proportional to 19,221.20, 28,826.40 and 6,077.60 is: 9,114.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,221.20 : 28,826.40 = 6,077.60 : x
  2. Step 2: Convert to fraction form
    19,221.20/28,826.40 = 6,077.60/x
  3. Step 3: Cross multiply
    19,221.20x = 28,826.40 × 6,077.60
  4. Step 4: Simplify right side
    19,221.20x = 175,195,328.64
  5. Step 5: Solve for x
    x = 175,195,328.64/19,221.20
  6. Step 6: Final answer
    x = 9,114.69

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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.