Home / 18,129.42-27,202.50-8,271.72

Finding the Fourth Proportional to 18,129.42, 27,202.50 and 8,271.72

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Solution

The fourth proportional to 18,129.42, 27,202.50 and 8,271.72 is: 12,411.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.42 : 27,202.50 = 8,271.72 : x
  2. Step 2: Convert to fraction form
    18,129.42/27,202.50 = 8,271.72/x
  3. Step 3: Cross multiply
    18,129.42x = 27,202.50 × 8,271.72
  4. Step 4: Simplify right side
    18,129.42x = 225,011,463.30
  5. Step 5: Solve for x
    x = 225,011,463.30/18,129.42
  6. Step 6: Final answer
    x = 12,411.40

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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.