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Finding the Fourth Proportional to 18,648.09, 27,972.21 and 7,554.99

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Solution

The fourth proportional to 18,648.09, 27,972.21 and 7,554.99 is: 11,332.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,648.09 : 27,972.21 = 7,554.99 : x
  2. Step 2: Convert to fraction form
    18,648.09/27,972.21 = 7,554.99/x
  3. Step 3: Cross multiply
    18,648.09x = 27,972.21 × 7,554.99
  4. Step 4: Simplify right side
    18,648.09x = 211,329,766.83
  5. Step 5: Solve for x
    x = 211,329,766.83/18,648.09
  6. Step 6: Final answer
    x = 11,332.52

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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.