Home / 18,485.94-25,518.98-11,780.76

Finding the Fourth Proportional to 18,485.94, 25,518.98 and 11,780.76

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Solution

The fourth proportional to 18,485.94, 25,518.98 and 11,780.76 is: 16,262.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,485.94 : 25,518.98 = 11,780.76 : x
  2. Step 2: Convert to fraction form
    18,485.94/25,518.98 = 11,780.76/x
  3. Step 3: Cross multiply
    18,485.94x = 25,518.98 × 11,780.76
  4. Step 4: Simplify right side
    18,485.94x = 300,632,978.82
  5. Step 5: Solve for x
    x = 300,632,978.82/18,485.94
  6. Step 6: Final answer
    x = 16,262.79

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.