Home / 28,179.36-42,287.49-10,649.19

Finding the Fourth Proportional to 28,179.36, 42,287.49 and 10,649.19

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Solution

The fourth proportional to 28,179.36, 42,287.49 and 10,649.19 is: 15,980.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.36 : 42,287.49 = 10,649.19 : x
  2. Step 2: Convert to fraction form
    28,179.36/42,287.49 = 10,649.19/x
  3. Step 3: Cross multiply
    28,179.36x = 42,287.49 × 10,649.19
  4. Step 4: Simplify right side
    28,179.36x = 450,327,357.06
  5. Step 5: Solve for x
    x = 450,327,357.06/28,179.36
  6. Step 6: Final answer
    x = 15,980.75

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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.