Home / 30,011.76-41,418.04-21,516.48

Finding the Fourth Proportional to 30,011.76, 41,418.04 and 21,516.48

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Solution

The fourth proportional to 30,011.76, 41,418.04 and 21,516.48 is: 29,694.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,011.76 : 41,418.04 = 21,516.48 : x
  2. Step 2: Convert to fraction form
    30,011.76/41,418.04 = 21,516.48/x
  3. Step 3: Cross multiply
    30,011.76x = 41,418.04 × 21,516.48
  4. Step 4: Simplify right side
    30,011.76x = 891,170,429.30
  5. Step 5: Solve for x
    x = 891,170,429.30/30,011.76
  6. Step 6: Final answer
    x = 29,694.04

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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.