Home / 18,555.89-27,768.12-11,539.20

Finding the Fourth Proportional to 18,555.89, 27,768.12 and 11,539.20

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Solution

The fourth proportional to 18,555.89, 27,768.12 and 11,539.20 is: 17,267.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,555.89 : 27,768.12 = 11,539.20 : x
  2. Step 2: Convert to fraction form
    18,555.89/27,768.12 = 11,539.20/x
  3. Step 3: Cross multiply
    18,555.89x = 27,768.12 × 11,539.20
  4. Step 4: Simplify right side
    18,555.89x = 320,421,890.30
  5. Step 5: Solve for x
    x = 320,421,890.30/18,555.89
  6. Step 6: Final answer
    x = 17,267.93

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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.