Home / 13,921.29-19,212.53-7,954.83

Finding the Fourth Proportional to 13,921.29, 19,212.53 and 7,954.83

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Solution

The fourth proportional to 13,921.29, 19,212.53 and 7,954.83 is: 10,978.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.29 : 19,212.53 = 7,954.83 : x
  2. Step 2: Convert to fraction form
    13,921.29/19,212.53 = 7,954.83/x
  3. Step 3: Cross multiply
    13,921.29x = 19,212.53 × 7,954.83
  4. Step 4: Simplify right side
    13,921.29x = 152,832,370.25
  5. Step 5: Solve for x
    x = 152,832,370.25/13,921.29
  6. Step 6: Final answer
    x = 10,978.32

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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.