Home / 28,179.48-42,287.68-10,649.31

Finding the Fourth Proportional to 28,179.48, 42,287.68 and 10,649.31

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Solution

The fourth proportional to 28,179.48, 42,287.68 and 10,649.31 is: 15,980.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.48 : 42,287.68 = 10,649.31 : x
  2. Step 2: Convert to fraction form
    28,179.48/42,287.68 = 10,649.31/x
  3. Step 3: Cross multiply
    28,179.48x = 42,287.68 × 10,649.31
  4. Step 4: Simplify right side
    28,179.48x = 450,334,560.25
  5. Step 5: Solve for x
    x = 450,334,560.25/28,179.48
  6. Step 6: Final answer
    x = 15,980.94

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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.