Home / 13,721.96-18,936.38-7,434.33

Finding the Fourth Proportional to 13,721.96, 18,936.38 and 7,434.33

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Solution

The fourth proportional to 13,721.96, 18,936.38 and 7,434.33 is: 10,259.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.96 : 18,936.38 = 7,434.33 : x
  2. Step 2: Convert to fraction form
    13,721.96/18,936.38 = 7,434.33/x
  3. Step 3: Cross multiply
    13,721.96x = 18,936.38 × 7,434.33
  4. Step 4: Simplify right side
    13,721.96x = 140,779,260.75
  5. Step 5: Solve for x
    x = 140,779,260.75/13,721.96
  6. Step 6: Final answer
    x = 10,259.42

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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.