Home / 13,412.52-20,120.67-4,051.48

Finding the Fourth Proportional to 13,412.52, 20,120.67 and 4,051.48

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Solution

The fourth proportional to 13,412.52, 20,120.67 and 4,051.48 is: 6,077.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,412.52 : 20,120.67 = 4,051.48 : x
  2. Step 2: Convert to fraction form
    13,412.52/20,120.67 = 4,051.48/x
  3. Step 3: Cross multiply
    13,412.52x = 20,120.67 × 4,051.48
  4. Step 4: Simplify right side
    13,412.52x = 81,518,492.09
  5. Step 5: Solve for x
    x = 81,518,492.09/13,412.52
  6. Step 6: Final answer
    x = 6,077.79

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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.