Home / 13,600.48-18,768.86-7,631.80

Finding the Fourth Proportional to 13,600.48, 18,768.86 and 7,631.80

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Solution

The fourth proportional to 13,600.48, 18,768.86 and 7,631.80 is: 10,531.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,600.48 : 18,768.86 = 7,631.80 : x
  2. Step 2: Convert to fraction form
    13,600.48/18,768.86 = 7,631.80/x
  3. Step 3: Cross multiply
    13,600.48x = 18,768.86 × 7,631.80
  4. Step 4: Simplify right side
    13,600.48x = 143,240,185.75
  5. Step 5: Solve for x
    x = 143,240,185.75/13,600.48
  6. Step 6: Final answer
    x = 10,531.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.