Home / 20,998.20-31,460.85-13,598.85

Finding the Fourth Proportional to 20,998.20, 31,460.85 and 13,598.85

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Solution

The fourth proportional to 20,998.20, 31,460.85 and 13,598.85 is: 20,374.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,998.20 : 31,460.85 = 13,598.85 : x
  2. Step 2: Convert to fraction form
    20,998.20/31,460.85 = 13,598.85/x
  3. Step 3: Cross multiply
    20,998.20x = 31,460.85 × 13,598.85
  4. Step 4: Simplify right side
    20,998.20x = 427,831,380.02
  5. Step 5: Solve for x
    x = 427,831,380.02/20,998.20
  6. Step 6: Final answer
    x = 20,374.67

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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.