Home / 18,286.19-27,430.35-5,139.59

Finding the Fourth Proportional to 18,286.19, 27,430.35 and 5,139.59

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Solution

The fourth proportional to 18,286.19, 27,430.35 and 5,139.59 is: 7,709.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,286.19 : 27,430.35 = 5,139.59 : x
  2. Step 2: Convert to fraction form
    18,286.19/27,430.35 = 5,139.59/x
  3. Step 3: Cross multiply
    18,286.19x = 27,430.35 × 5,139.59
  4. Step 4: Simplify right side
    18,286.19x = 140,980,596.13
  5. Step 5: Solve for x
    x = 140,980,596.13/18,286.19
  6. Step 6: Final answer
    x = 7,709.68

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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.