Home / 20,430.58-30,586.38-15,188.80

Finding the Fourth Proportional to 20,430.58, 30,586.38 and 15,188.80

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Solution

The fourth proportional to 20,430.58, 30,586.38 and 15,188.80 is: 22,738.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,430.58 : 30,586.38 = 15,188.80 : x
  2. Step 2: Convert to fraction form
    20,430.58/30,586.38 = 15,188.80/x
  3. Step 3: Cross multiply
    20,430.58x = 30,586.38 × 15,188.80
  4. Step 4: Simplify right side
    20,430.58x = 464,570,408.54
  5. Step 5: Solve for x
    x = 464,570,408.54/20,430.58
  6. Step 6: Final answer
    x = 22,738.97

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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.