Home / 29,278.14-40,403.25-15,849.36

Finding the Fourth Proportional to 29,278.14, 40,403.25 and 15,849.36

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Solution

The fourth proportional to 29,278.14, 40,403.25 and 15,849.36 is: 21,871.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,278.14 : 40,403.25 = 15,849.36 : x
  2. Step 2: Convert to fraction form
    29,278.14/40,403.25 = 15,849.36/x
  3. Step 3: Cross multiply
    29,278.14x = 40,403.25 × 15,849.36
  4. Step 4: Simplify right side
    29,278.14x = 640,365,654.42
  5. Step 5: Solve for x
    x = 640,365,654.42/29,278.14
  6. Step 6: Final answer
    x = 21,871.80

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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.