Home / 18,818.11-25,969.80-10,860.31

Finding the Fourth Proportional to 18,818.11, 25,969.80 and 10,860.31

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Solution

The fourth proportional to 18,818.11, 25,969.80 and 10,860.31 is: 14,987.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.11 : 25,969.80 = 10,860.31 : x
  2. Step 2: Convert to fraction form
    18,818.11/25,969.80 = 10,860.31/x
  3. Step 3: Cross multiply
    18,818.11x = 25,969.80 × 10,860.31
  4. Step 4: Simplify right side
    18,818.11x = 282,040,078.64
  5. Step 5: Solve for x
    x = 282,040,078.64/18,818.11
  6. Step 6: Final answer
    x = 14,987.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.