Home / 35,130.80-48,505.86-21,720.44

Finding the Fourth Proportional to 35,130.80, 48,505.86 and 21,720.44

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Solution

The fourth proportional to 35,130.80, 48,505.86 and 21,720.44 is: 29,989.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,130.80 : 48,505.86 = 21,720.44 : x
  2. Step 2: Convert to fraction form
    35,130.80/48,505.86 = 21,720.44/x
  3. Step 3: Cross multiply
    35,130.80x = 48,505.86 × 21,720.44
  4. Step 4: Simplify right side
    35,130.80x = 1,053,568,621.78
  5. Step 5: Solve for x
    x = 1,053,568,621.78/35,130.80
  6. Step 6: Final answer
    x = 29,989.88

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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.