Home / 18,178.68-27,271.18-7,091.40

Finding the Fourth Proportional to 18,178.68, 27,271.18 and 7,091.40

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Solution

The fourth proportional to 18,178.68, 27,271.18 and 7,091.40 is: 10,638.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,178.68 : 27,271.18 = 7,091.40 : x
  2. Step 2: Convert to fraction form
    18,178.68/27,271.18 = 7,091.40/x
  3. Step 3: Cross multiply
    18,178.68x = 27,271.18 × 7,091.40
  4. Step 4: Simplify right side
    18,178.68x = 193,390,845.85
  5. Step 5: Solve for x
    x = 193,390,845.85/18,178.68
  6. Step 6: Final answer
    x = 10,638.33

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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.