Home / 28,287.24-42,431.22-11,420.58

Finding the Fourth Proportional to 28,287.24, 42,431.22 and 11,420.58

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Solution

The fourth proportional to 28,287.24, 42,431.22 and 11,420.58 is: 17,131.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,287.24 : 42,431.22 = 11,420.58 : x
  2. Step 2: Convert to fraction form
    28,287.24/42,431.22 = 11,420.58/x
  3. Step 3: Cross multiply
    28,287.24x = 42,431.22 × 11,420.58
  4. Step 4: Simplify right side
    28,287.24x = 484,589,142.51
  5. Step 5: Solve for x
    x = 484,589,142.51/28,287.24
  6. Step 6: Final answer
    x = 17,131.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.