Home / 28,871.13-43,288.02-18,980.43

Finding the Fourth Proportional to 28,871.13, 43,288.02 and 18,980.43

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Solution

The fourth proportional to 28,871.13, 43,288.02 and 18,980.43 is: 28,458.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,871.13 : 43,288.02 = 18,980.43 : x
  2. Step 2: Convert to fraction form
    28,871.13/43,288.02 = 18,980.43/x
  3. Step 3: Cross multiply
    28,871.13x = 43,288.02 × 18,980.43
  4. Step 4: Simplify right side
    28,871.13x = 821,625,071.12
  5. Step 5: Solve for x
    x = 821,625,071.12/28,871.13
  6. Step 6: Final answer
    x = 28,458.36

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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.