Home / 18,918.77-28,341.16-11,504.84

Finding the Fourth Proportional to 18,918.77, 28,341.16 and 11,504.84

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Solution

The fourth proportional to 18,918.77, 28,341.16 and 11,504.84 is: 17,234.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,918.77 : 28,341.16 = 11,504.84 : x
  2. Step 2: Convert to fraction form
    18,918.77/28,341.16 = 11,504.84/x
  3. Step 3: Cross multiply
    18,918.77x = 28,341.16 × 11,504.84
  4. Step 4: Simplify right side
    18,918.77x = 326,060,340.75
  5. Step 5: Solve for x
    x = 326,060,340.75/18,918.77
  6. Step 6: Final answer
    x = 17,234.76

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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.