Home / 36,520.72-54,768.12-13,140.88

Finding the Fourth Proportional to 36,520.72, 54,768.12 and 13,140.88

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Solution

The fourth proportional to 36,520.72, 54,768.12 and 13,140.88 is: 19,706.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,520.72 : 54,768.12 = 13,140.88 : x
  2. Step 2: Convert to fraction form
    36,520.72/54,768.12 = 13,140.88/x
  3. Step 3: Cross multiply
    36,520.72x = 54,768.12 × 13,140.88
  4. Step 4: Simplify right side
    36,520.72x = 719,701,292.75
  5. Step 5: Solve for x
    x = 719,701,292.75/36,520.72
  6. Step 6: Final answer
    x = 19,706.66

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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.