Home / 19,148.40-28,738.80-8,634.60

Finding the Fourth Proportional to 19,148.40, 28,738.80 and 8,634.60

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Solution

The fourth proportional to 19,148.40, 28,738.80 and 8,634.60 is: 12,959.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,148.40 : 28,738.80 = 8,634.60 : x
  2. Step 2: Convert to fraction form
    19,148.40/28,738.80 = 8,634.60/x
  3. Step 3: Cross multiply
    19,148.40x = 28,738.80 × 8,634.60
  4. Step 4: Simplify right side
    19,148.40x = 248,148,042.48
  5. Step 5: Solve for x
    x = 248,148,042.48/19,148.40
  6. Step 6: Final answer
    x = 12,959.21

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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.