Home / 21,441.78-29,590.92-12,011.76

Finding the Fourth Proportional to 21,441.78, 29,590.92 and 12,011.76

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Solution

The fourth proportional to 21,441.78, 29,590.92 and 12,011.76 is: 16,576.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,441.78 : 29,590.92 = 12,011.76 : x
  2. Step 2: Convert to fraction form
    21,441.78/29,590.92 = 12,011.76/x
  3. Step 3: Cross multiply
    21,441.78x = 29,590.92 × 12,011.76
  4. Step 4: Simplify right side
    21,441.78x = 355,439,029.22
  5. Step 5: Solve for x
    x = 355,439,029.22/21,441.78
  6. Step 6: Final answer
    x = 16,576.94

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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.