Home / 21,285.87-29,358.90-14,102.79

Finding the Fourth Proportional to 21,285.87, 29,358.90 and 14,102.79

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Solution

The fourth proportional to 21,285.87, 29,358.90 and 14,102.79 is: 19,451.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,285.87 : 29,358.90 = 14,102.79 : x
  2. Step 2: Convert to fraction form
    21,285.87/29,358.90 = 14,102.79/x
  3. Step 3: Cross multiply
    21,285.87x = 29,358.90 × 14,102.79
  4. Step 4: Simplify right side
    21,285.87x = 414,042,401.33
  5. Step 5: Solve for x
    x = 414,042,401.33/21,285.87
  6. Step 6: Final answer
    x = 19,451.51

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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.