Home / 13,683.34-18,884.80-7,716.88

Finding the Fourth Proportional to 13,683.34, 18,884.80 and 7,716.88

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Solution

The fourth proportional to 13,683.34, 18,884.80 and 7,716.88 is: 10,650.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,683.34 : 18,884.80 = 7,716.88 : x
  2. Step 2: Convert to fraction form
    13,683.34/18,884.80 = 7,716.88/x
  3. Step 3: Cross multiply
    13,683.34x = 18,884.80 × 7,716.88
  4. Step 4: Simplify right side
    13,683.34x = 145,731,735.42
  5. Step 5: Solve for x
    x = 145,731,735.42/13,683.34
  6. Step 6: Final answer
    x = 10,650.30

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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.