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Finding the Fourth Proportional to 18,300.88, 27,450.71 and 7,764.13

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Solution

The fourth proportional to 18,300.88, 27,450.71 and 7,764.13 is: 11,645.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,300.88 : 27,450.71 = 7,764.13 : x
  2. Step 2: Convert to fraction form
    18,300.88/27,450.71 = 7,764.13/x
  3. Step 3: Cross multiply
    18,300.88x = 27,450.71 × 7,764.13
  4. Step 4: Simplify right side
    18,300.88x = 213,130,881.03
  5. Step 5: Solve for x
    x = 213,130,881.03/18,300.88
  6. Step 6: Final answer
    x = 11,645.94

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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.