Home / 19,150.80-28,726.20-12,584.40

Finding the Fourth Proportional to 19,150.80, 28,726.20 and 12,584.40

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Solution

The fourth proportional to 19,150.80, 28,726.20 and 12,584.40 is: 18,876.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,150.80 : 28,726.20 = 12,584.40 : x
  2. Step 2: Convert to fraction form
    19,150.80/28,726.20 = 12,584.40/x
  3. Step 3: Cross multiply
    19,150.80x = 28,726.20 × 12,584.40
  4. Step 4: Simplify right side
    19,150.80x = 361,501,991.28
  5. Step 5: Solve for x
    x = 361,501,991.28/19,150.80
  6. Step 6: Final answer
    x = 18,876.60

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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.