Home / 13,758.39-18,983.43-7,789.23

Finding the Fourth Proportional to 13,758.39, 18,983.43 and 7,789.23

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Solution

The fourth proportional to 13,758.39, 18,983.43 and 7,789.23 is: 10,747.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,758.39 : 18,983.43 = 7,789.23 : x
  2. Step 2: Convert to fraction form
    13,758.39/18,983.43 = 7,789.23/x
  3. Step 3: Cross multiply
    13,758.39x = 18,983.43 × 7,789.23
  4. Step 4: Simplify right side
    13,758.39x = 147,866,302.46
  5. Step 5: Solve for x
    x = 147,866,302.46/13,758.39
  6. Step 6: Final answer
    x = 10,747.36

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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.