Home / 21,832.88-30,142.14-14,769.68

Finding the Fourth Proportional to 21,832.88, 30,142.14 and 14,769.68

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Solution

The fourth proportional to 21,832.88, 30,142.14 and 14,769.68 is: 20,390.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,832.88 : 30,142.14 = 14,769.68 : x
  2. Step 2: Convert to fraction form
    21,832.88/30,142.14 = 14,769.68/x
  3. Step 3: Cross multiply
    21,832.88x = 30,142.14 × 14,769.68
  4. Step 4: Simplify right side
    21,832.88x = 445,189,762.32
  5. Step 5: Solve for x
    x = 445,189,762.32/21,832.88
  6. Step 6: Final answer
    x = 20,390.79

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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.