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Finding the Fourth Proportional to 18,896.48, 28,345.16 and 8,364.24

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Solution

The fourth proportional to 18,896.48, 28,345.16 and 8,364.24 is: 12,546.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,896.48 : 28,345.16 = 8,364.24 : x
  2. Step 2: Convert to fraction form
    18,896.48/28,345.16 = 8,364.24/x
  3. Step 3: Cross multiply
    18,896.48x = 28,345.16 × 8,364.24
  4. Step 4: Simplify right side
    18,896.48x = 237,085,721.08
  5. Step 5: Solve for x
    x = 237,085,721.08/18,896.48
  6. Step 6: Final answer
    x = 12,546.55

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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.