Home / 13,489.62-18,615.84-7,825.68

Finding the Fourth Proportional to 13,489.62, 18,615.84 and 7,825.68

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Solution

The fourth proportional to 13,489.62, 18,615.84 and 7,825.68 is: 10,799.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,489.62 : 18,615.84 = 7,825.68 : x
  2. Step 2: Convert to fraction form
    13,489.62/18,615.84 = 7,825.68/x
  3. Step 3: Cross multiply
    13,489.62x = 18,615.84 × 7,825.68
  4. Step 4: Simplify right side
    13,489.62x = 145,681,606.77
  5. Step 5: Solve for x
    x = 145,681,606.77/13,489.62
  6. Step 6: Final answer
    x = 10,799.53

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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.