Home / 21,289.02-29,375.83-12,090.25

Finding the Fourth Proportional to 21,289.02, 29,375.83 and 12,090.25

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Solution

The fourth proportional to 21,289.02, 29,375.83 and 12,090.25 is: 16,682.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289.02 : 29,375.83 = 12,090.25 : x
  2. Step 2: Convert to fraction form
    21,289.02/29,375.83 = 12,090.25/x
  3. Step 3: Cross multiply
    21,289.02x = 29,375.83 × 12,090.25
  4. Step 4: Simplify right side
    21,289.02x = 355,161,128.66
  5. Step 5: Solve for x
    x = 355,161,128.66/21,289.02
  6. Step 6: Final answer
    x = 16,682.83

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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.