Home / 20,416.60-30,600.60-8,570.35

Finding the Fourth Proportional to 20,416.60, 30,600.60 and 8,570.35

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Solution

The fourth proportional to 20,416.60, 30,600.60 and 8,570.35 is: 12,845.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,416.60 : 30,600.60 = 8,570.35 : x
  2. Step 2: Convert to fraction form
    20,416.60/30,600.60 = 8,570.35/x
  3. Step 3: Cross multiply
    20,416.60x = 30,600.60 × 8,570.35
  4. Step 4: Simplify right side
    20,416.60x = 262,257,852.21
  5. Step 5: Solve for x
    x = 262,257,852.21/20,416.60
  6. Step 6: Final answer
    x = 12,845.32

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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.