Home / 10,218.88-15,329.31-3,979.41

Finding the Fourth Proportional to 10,218.88, 15,329.31 and 3,979.41

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Solution

The fourth proportional to 10,218.88, 15,329.31 and 3,979.41 is: 5,969.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,218.88 : 15,329.31 = 3,979.41 : x
  2. Step 2: Convert to fraction form
    10,218.88/15,329.31 = 3,979.41/x
  3. Step 3: Cross multiply
    10,218.88x = 15,329.31 × 3,979.41
  4. Step 4: Simplify right side
    10,218.88x = 61,001,609.51
  5. Step 5: Solve for x
    x = 61,001,609.51/10,218.88
  6. Step 6: Final answer
    x = 5,969.50

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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.