Home / 12,584.40-18,865.80-11,272.20

Finding the Fourth Proportional to 12,584.40, 18,865.80 and 11,272.20

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Solution

The fourth proportional to 12,584.40, 18,865.80 and 11,272.20 is: 16,898.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,584.40 : 18,865.80 = 11,272.20 : x
  2. Step 2: Convert to fraction form
    12,584.40/18,865.80 = 11,272.20/x
  3. Step 3: Cross multiply
    12,584.40x = 18,865.80 × 11,272.20
  4. Step 4: Simplify right side
    12,584.40x = 212,659,070.76
  5. Step 5: Solve for x
    x = 212,659,070.76/12,584.40
  6. Step 6: Final answer
    x = 16,898.63

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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.