Home / 28,977.60-43,388.53-18,390.30

Finding the Fourth Proportional to 28,977.60, 43,388.53 and 18,390.30

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Solution

The fourth proportional to 28,977.60, 43,388.53 and 18,390.30 is: 27,536.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,977.60 : 43,388.53 = 18,390.30 : x
  2. Step 2: Convert to fraction form
    28,977.60/43,388.53 = 18,390.30/x
  3. Step 3: Cross multiply
    28,977.60x = 43,388.53 × 18,390.30
  4. Step 4: Simplify right side
    28,977.60x = 797,927,996.61
  5. Step 5: Solve for x
    x = 797,927,996.61/28,977.60
  6. Step 6: Final answer
    x = 27,536.03

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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.