Home / 15,914.43-21,967.80-13,667.28

Finding the Fourth Proportional to 15,914.43, 21,967.80 and 13,667.28

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Solution

The fourth proportional to 15,914.43, 21,967.80 and 13,667.28 is: 18,865.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,914.43 : 21,967.80 = 13,667.28 : x
  2. Step 2: Convert to fraction form
    15,914.43/21,967.80 = 13,667.28/x
  3. Step 3: Cross multiply
    15,914.43x = 21,967.80 × 13,667.28
  4. Step 4: Simplify right side
    15,914.43x = 300,240,073.58
  5. Step 5: Solve for x
    x = 300,240,073.58/15,914.43
  6. Step 6: Final answer
    x = 18,865.90

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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.