Home / 18,818.51-25,965.87-11,160.37

Finding the Fourth Proportional to 18,818.51, 25,965.87 and 11,160.37

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Solution

The fourth proportional to 18,818.51, 25,965.87 and 11,160.37 is: 15,399.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.51 : 25,965.87 = 11,160.37 : x
  2. Step 2: Convert to fraction form
    18,818.51/25,965.87 = 11,160.37/x
  3. Step 3: Cross multiply
    18,818.51x = 25,965.87 × 11,160.37
  4. Step 4: Simplify right side
    18,818.51x = 289,788,609.81
  5. Step 5: Solve for x
    x = 289,788,609.81/18,818.51
  6. Step 6: Final answer
    x = 15,399.12

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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.