Home / 13,655.85-18,843.60-7,687.41

Finding the Fourth Proportional to 13,655.85, 18,843.60 and 7,687.41

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Solution

The fourth proportional to 13,655.85, 18,843.60 and 7,687.41 is: 10,607.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.85 : 18,843.60 = 7,687.41 : x
  2. Step 2: Convert to fraction form
    13,655.85/18,843.60 = 7,687.41/x
  3. Step 3: Cross multiply
    13,655.85x = 18,843.60 × 7,687.41
  4. Step 4: Simplify right side
    13,655.85x = 144,858,479.08
  5. Step 5: Solve for x
    x = 144,858,479.08/13,655.85
  6. Step 6: Final answer
    x = 10,607.80

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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.