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Finding the Fourth Proportional to 18,498.60, 27,747.90 and 6,810.30

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Solution

The fourth proportional to 18,498.60, 27,747.90 and 6,810.30 is: 10,215.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,498.60 : 27,747.90 = 6,810.30 : x
  2. Step 2: Convert to fraction form
    18,498.60/27,747.90 = 6,810.30/x
  3. Step 3: Cross multiply
    18,498.60x = 27,747.90 × 6,810.30
  4. Step 4: Simplify right side
    18,498.60x = 188,971,523.37
  5. Step 5: Solve for x
    x = 188,971,523.37/18,498.60
  6. Step 6: Final answer
    x = 10,215.45

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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.