Home / 19,287.20-28,925.40-6,143.60

Finding the Fourth Proportional to 19,287.20, 28,925.40 and 6,143.60

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Solution

The fourth proportional to 19,287.20, 28,925.40 and 6,143.60 is: 9,213.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,287.20 : 28,925.40 = 6,143.60 : x
  2. Step 2: Convert to fraction form
    19,287.20/28,925.40 = 6,143.60/x
  3. Step 3: Cross multiply
    19,287.20x = 28,925.40 × 6,143.60
  4. Step 4: Simplify right side
    19,287.20x = 177,706,087.44
  5. Step 5: Solve for x
    x = 177,706,087.44/19,287.20
  6. Step 6: Final answer
    x = 9,213.68

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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.