Home / 18,498.40-27,743.28-6,812.80

Finding the Fourth Proportional to 18,498.40, 27,743.28 and 6,812.80

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Solution

The fourth proportional to 18,498.40, 27,743.28 and 6,812.80 is: 10,217.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,498.40 : 27,743.28 = 6,812.80 : x
  2. Step 2: Convert to fraction form
    18,498.40/27,743.28 = 6,812.80/x
  3. Step 3: Cross multiply
    18,498.40x = 27,743.28 × 6,812.80
  4. Step 4: Simplify right side
    18,498.40x = 189,009,417.98
  5. Step 5: Solve for x
    x = 189,009,417.98/18,498.40
  6. Step 6: Final answer
    x = 10,217.61

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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.