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Finding the Fourth Proportional to 18,271.20, 27,417.60 and 12,049.20

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Solution

The fourth proportional to 18,271.20, 27,417.60 and 12,049.20 is: 18,080.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,271.20 : 27,417.60 = 12,049.20 : x
  2. Step 2: Convert to fraction form
    18,271.20/27,417.60 = 12,049.20/x
  3. Step 3: Cross multiply
    18,271.20x = 27,417.60 × 12,049.20
  4. Step 4: Simplify right side
    18,271.20x = 330,360,145.92
  5. Step 5: Solve for x
    x = 330,360,145.92/18,271.20
  6. Step 6: Final answer
    x = 18,080.92

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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.