Home / 21,579.57-29,768.45-14,015.79

Finding the Fourth Proportional to 21,579.57, 29,768.45 and 14,015.79

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Solution

The fourth proportional to 21,579.57, 29,768.45 and 14,015.79 is: 19,334.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,579.57 : 29,768.45 = 14,015.79 : x
  2. Step 2: Convert to fraction form
    21,579.57/29,768.45 = 14,015.79/x
  3. Step 3: Cross multiply
    21,579.57x = 29,768.45 × 14,015.79
  4. Step 4: Simplify right side
    21,579.57x = 417,228,273.75
  5. Step 5: Solve for x
    x = 417,228,273.75/21,579.57
  6. Step 6: Final answer
    x = 19,334.41

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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.