Home / 18,118.99-27,152.77-7,577.65

Finding the Fourth Proportional to 18,118.99, 27,152.77 and 7,577.65

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Solution

The fourth proportional to 18,118.99, 27,152.77 and 7,577.65 is: 11,355.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,118.99 : 27,152.77 = 7,577.65 : x
  2. Step 2: Convert to fraction form
    18,118.99/27,152.77 = 7,577.65/x
  3. Step 3: Cross multiply
    18,118.99x = 27,152.77 × 7,577.65
  4. Step 4: Simplify right side
    18,118.99x = 205,754,187.59
  5. Step 5: Solve for x
    x = 205,754,187.59/18,118.99
  6. Step 6: Final answer
    x = 11,355.72

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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.