Home / 13,489.66-18,615.75-7,825.48

Finding the Fourth Proportional to 13,489.66, 18,615.75 and 7,825.48

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Solution

The fourth proportional to 13,489.66, 18,615.75 and 7,825.48 is: 10,799.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,489.66 : 18,615.75 = 7,825.48 : x
  2. Step 2: Convert to fraction form
    13,489.66/18,615.75 = 7,825.48/x
  3. Step 3: Cross multiply
    13,489.66x = 18,615.75 × 7,825.48
  4. Step 4: Simplify right side
    13,489.66x = 145,677,179.31
  5. Step 5: Solve for x
    x = 145,677,179.31/13,489.66
  6. Step 6: Final answer
    x = 10,799.17

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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.