Home / 13,642.50-20,463.75-5,440.26

Finding the Fourth Proportional to 13,642.50, 20,463.75 and 5,440.26

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Solution

The fourth proportional to 13,642.50, 20,463.75 and 5,440.26 is: 8,160.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,642.50 : 20,463.75 = 5,440.26 : x
  2. Step 2: Convert to fraction form
    13,642.50/20,463.75 = 5,440.26/x
  3. Step 3: Cross multiply
    13,642.50x = 20,463.75 × 5,440.26
  4. Step 4: Simplify right side
    13,642.50x = 111,328,120.58
  5. Step 5: Solve for x
    x = 111,328,120.58/13,642.50
  6. Step 6: Final answer
    x = 8,160.39

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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.