Home / 18,218.40-27,288.72-11,271.84

Finding the Fourth Proportional to 18,218.40, 27,288.72 and 11,271.84

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Solution

The fourth proportional to 18,218.40, 27,288.72 and 11,271.84 is: 16,883.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,218.40 : 27,288.72 = 11,271.84 : x
  2. Step 2: Convert to fraction form
    18,218.40/27,288.72 = 11,271.84/x
  3. Step 3: Cross multiply
    18,218.40x = 27,288.72 × 11,271.84
  4. Step 4: Simplify right side
    18,218.40x = 307,594,085.64
  5. Step 5: Solve for x
    x = 307,594,085.64/18,218.40
  6. Step 6: Final answer
    x = 16,883.70

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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.