Home / 12,820.20-19,230.30-8,883.60

Finding the Fourth Proportional to 12,820.20, 19,230.30 and 8,883.60

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Solution

The fourth proportional to 12,820.20, 19,230.30 and 8,883.60 is: 13,325.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,820.20 : 19,230.30 = 8,883.60 : x
  2. Step 2: Convert to fraction form
    12,820.20/19,230.30 = 8,883.60/x
  3. Step 3: Cross multiply
    12,820.20x = 19,230.30 × 8,883.60
  4. Step 4: Simplify right side
    12,820.20x = 170,834,293.08
  5. Step 5: Solve for x
    x = 170,834,293.08/12,820.20
  6. Step 6: Final answer
    x = 13,325.40

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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.