Home / 20,370.86-30,551.34-8,518.22

Finding the Fourth Proportional to 20,370.86, 30,551.34 and 8,518.22

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Solution

The fourth proportional to 20,370.86, 30,551.34 and 8,518.22 is: 12,775.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,370.86 : 30,551.34 = 8,518.22 : x
  2. Step 2: Convert to fraction form
    20,370.86/30,551.34 = 8,518.22/x
  3. Step 3: Cross multiply
    20,370.86x = 30,551.34 × 8,518.22
  4. Step 4: Simplify right side
    20,370.86x = 260,243,035.41
  5. Step 5: Solve for x
    x = 260,243,035.41/20,370.86
  6. Step 6: Final answer
    x = 12,775.26

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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.