Home / 18,259.71-27,390.26-5,111.75

Finding the Fourth Proportional to 18,259.71, 27,390.26 and 5,111.75

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Solution

The fourth proportional to 18,259.71, 27,390.26 and 5,111.75 is: 7,667.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,259.71 : 27,390.26 = 5,111.75 : x
  2. Step 2: Convert to fraction form
    18,259.71/27,390.26 = 5,111.75/x
  3. Step 3: Cross multiply
    18,259.71x = 27,390.26 × 5,111.75
  4. Step 4: Simplify right side
    18,259.71x = 140,011,999.04
  5. Step 5: Solve for x
    x = 140,011,999.04/18,259.71
  6. Step 6: Final answer
    x = 7,667.81

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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.