Home / 18,342.30-27,510.39-5,191.41

Finding the Fourth Proportional to 18,342.30, 27,510.39 and 5,191.41

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Solution

The fourth proportional to 18,342.30, 27,510.39 and 5,191.41 is: 7,786.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,342.30 : 27,510.39 = 5,191.41 : x
  2. Step 2: Convert to fraction form
    18,342.30/27,510.39 = 5,191.41/x
  3. Step 3: Cross multiply
    18,342.30x = 27,510.39 × 5,191.41
  4. Step 4: Simplify right side
    18,342.30x = 142,817,713.75
  5. Step 5: Solve for x
    x = 142,817,713.75/18,342.30
  6. Step 6: Final answer
    x = 7,786.25

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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.