Home / 21,451.02-29,601.90-12,021.54

Finding the Fourth Proportional to 21,451.02, 29,601.90 and 12,021.54

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Solution

The fourth proportional to 21,451.02, 29,601.90 and 12,021.54 is: 16,589.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,451.02 : 29,601.90 = 12,021.54 : x
  2. Step 2: Convert to fraction form
    21,451.02/29,601.90 = 12,021.54/x
  3. Step 3: Cross multiply
    21,451.02x = 29,601.90 × 12,021.54
  4. Step 4: Simplify right side
    21,451.02x = 355,860,424.93
  5. Step 5: Solve for x
    x = 355,860,424.93/21,451.02
  6. Step 6: Final answer
    x = 16,589.44

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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.