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Finding the Fourth Proportional to 18,578.99, 27,852.08 and 14,215.93

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Solution

The fourth proportional to 18,578.99, 27,852.08 and 14,215.93 is: 21,311.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,578.99 : 27,852.08 = 14,215.93 : x
  2. Step 2: Convert to fraction form
    18,578.99/27,852.08 = 14,215.93/x
  3. Step 3: Cross multiply
    18,578.99x = 27,852.08 × 14,215.93
  4. Step 4: Simplify right side
    18,578.99x = 395,943,219.63
  5. Step 5: Solve for x
    x = 395,943,219.63/18,578.99
  6. Step 6: Final answer
    x = 21,311.34

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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.