Home / 13,675.89-18,872.37-7,707.43

Finding the Fourth Proportional to 13,675.89, 18,872.37 and 7,707.43

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Solution

The fourth proportional to 13,675.89, 18,872.37 and 7,707.43 is: 10,636.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,675.89 : 18,872.37 = 7,707.43 : x
  2. Step 2: Convert to fraction form
    13,675.89/18,872.37 = 7,707.43/x
  3. Step 3: Cross multiply
    13,675.89x = 18,872.37 × 7,707.43
  4. Step 4: Simplify right side
    13,675.89x = 145,457,419.54
  5. Step 5: Solve for x
    x = 145,457,419.54/13,675.89
  6. Step 6: Final answer
    x = 10,636.05

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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.