Home / 20,460.16-28,234.88-11,628.16

Finding the Fourth Proportional to 20,460.16, 28,234.88 and 11,628.16

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Solution

The fourth proportional to 20,460.16, 28,234.88 and 11,628.16 is: 16,046.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,460.16 : 28,234.88 = 11,628.16 : x
  2. Step 2: Convert to fraction form
    20,460.16/28,234.88 = 11,628.16/x
  3. Step 3: Cross multiply
    20,460.16x = 28,234.88 × 11,628.16
  4. Step 4: Simplify right side
    20,460.16x = 328,319,702.22
  5. Step 5: Solve for x
    x = 328,319,702.22/20,460.16
  6. Step 6: Final answer
    x = 16,046.78

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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.