Home / 19,028.40-28,542.60-15,529.20

Finding the Fourth Proportional to 19,028.40, 28,542.60 and 15,529.20

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Solution

The fourth proportional to 19,028.40, 28,542.60 and 15,529.20 is: 23,293.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,028.40 : 28,542.60 = 15,529.20 : x
  2. Step 2: Convert to fraction form
    19,028.40/28,542.60 = 15,529.20/x
  3. Step 3: Cross multiply
    19,028.40x = 28,542.60 × 15,529.20
  4. Step 4: Simplify right side
    19,028.40x = 443,243,743.92
  5. Step 5: Solve for x
    x = 443,243,743.92/19,028.40
  6. Step 6: Final answer
    x = 23,293.80

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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.