Home / 13,385.96-18,474.88-7,719.68

Finding the Fourth Proportional to 13,385.96, 18,474.88 and 7,719.68

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Solution

The fourth proportional to 13,385.96, 18,474.88 and 7,719.68 is: 10,654.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.96 : 18,474.88 = 7,719.68 : x
  2. Step 2: Convert to fraction form
    13,385.96/18,474.88 = 7,719.68/x
  3. Step 3: Cross multiply
    13,385.96x = 18,474.88 × 7,719.68
  4. Step 4: Simplify right side
    13,385.96x = 142,620,161.64
  5. Step 5: Solve for x
    x = 142,620,161.64/13,385.96
  6. Step 6: Final answer
    x = 10,654.46

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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.