Home / 18,735.18-28,108.59-11,247.12

Finding the Fourth Proportional to 18,735.18, 28,108.59 and 11,247.12

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Solution

The fourth proportional to 18,735.18, 28,108.59 and 11,247.12 is: 16,874.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,735.18 : 28,108.59 = 11,247.12 : x
  2. Step 2: Convert to fraction form
    18,735.18/28,108.59 = 11,247.12/x
  3. Step 3: Cross multiply
    18,735.18x = 28,108.59 × 11,247.12
  4. Step 4: Simplify right side
    18,735.18x = 316,140,684.76
  5. Step 5: Solve for x
    x = 316,140,684.76/18,735.18
  6. Step 6: Final answer
    x = 16,874.17

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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.