Home / 13,380.49-20,066.48-12,506.91

Finding the Fourth Proportional to 13,380.49, 20,066.48 and 12,506.91

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Solution

The fourth proportional to 13,380.49, 20,066.48 and 12,506.91 is: 18,756.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.49 : 20,066.48 = 12,506.91 : x
  2. Step 2: Convert to fraction form
    13,380.49/20,066.48 = 12,506.91/x
  3. Step 3: Cross multiply
    13,380.49x = 20,066.48 × 12,506.91
  4. Step 4: Simplify right side
    13,380.49x = 250,969,638.85
  5. Step 5: Solve for x
    x = 250,969,638.85/13,380.49
  6. Step 6: Final answer
    x = 18,756.38

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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.