Home / 28,217.70-42,289.42-15,743.60

Finding the Fourth Proportional to 28,217.70, 42,289.42 and 15,743.60

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Solution

The fourth proportional to 28,217.70, 42,289.42 and 15,743.60 is: 23,594.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,217.70 : 42,289.42 = 15,743.60 : x
  2. Step 2: Convert to fraction form
    28,217.70/42,289.42 = 15,743.60/x
  3. Step 3: Cross multiply
    28,217.70x = 42,289.42 × 15,743.60
  4. Step 4: Simplify right side
    28,217.70x = 665,787,712.71
  5. Step 5: Solve for x
    x = 665,787,712.71/28,217.70
  6. Step 6: Final answer
    x = 23,594.68

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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.