Home / 13,759.82-18,988.26-7,472.21

Finding the Fourth Proportional to 13,759.82, 18,988.26 and 7,472.21

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Solution

The fourth proportional to 13,759.82, 18,988.26 and 7,472.21 is: 10,311.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,759.82 : 18,988.26 = 7,472.21 : x
  2. Step 2: Convert to fraction form
    13,759.82/18,988.26 = 7,472.21/x
  3. Step 3: Cross multiply
    13,759.82x = 18,988.26 × 7,472.21
  4. Step 4: Simplify right side
    13,759.82x = 141,884,266.25
  5. Step 5: Solve for x
    x = 141,884,266.25/13,759.82
  6. Step 6: Final answer
    x = 10,311.49

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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.