Home / 19,122.40-28,683.60-5,978.80

Finding the Fourth Proportional to 19,122.40, 28,683.60 and 5,978.80

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Solution

The fourth proportional to 19,122.40, 28,683.60 and 5,978.80 is: 8,968.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,122.40 : 28,683.60 = 5,978.80 : x
  2. Step 2: Convert to fraction form
    19,122.40/28,683.60 = 5,978.80/x
  3. Step 3: Cross multiply
    19,122.40x = 28,683.60 × 5,978.80
  4. Step 4: Simplify right side
    19,122.40x = 171,493,507.68
  5. Step 5: Solve for x
    x = 171,493,507.68/19,122.40
  6. Step 6: Final answer
    x = 8,968.20

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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.