Home / 21,405.02-29,553.39-13,341.87

Finding the Fourth Proportional to 21,405.02, 29,553.39 and 13,341.87

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Solution

The fourth proportional to 21,405.02, 29,553.39 and 13,341.87 is: 18,420.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,405.02 : 29,553.39 = 13,341.87 : x
  2. Step 2: Convert to fraction form
    21,405.02/29,553.39 = 13,341.87/x
  3. Step 3: Cross multiply
    21,405.02x = 29,553.39 × 13,341.87
  4. Step 4: Simplify right side
    21,405.02x = 394,297,487.44
  5. Step 5: Solve for x
    x = 394,297,487.44/21,405.02
  6. Step 6: Final answer
    x = 18,420.80

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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.