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Finding the Fourth Proportional to 18,863.16, 28,255.86 and 11,048.28

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Solution

The fourth proportional to 18,863.16, 28,255.86 and 11,048.28 is: 16,549.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863.16 : 28,255.86 = 11,048.28 : x
  2. Step 2: Convert to fraction form
    18,863.16/28,255.86 = 11,048.28/x
  3. Step 3: Cross multiply
    18,863.16x = 28,255.86 × 11,048.28
  4. Step 4: Simplify right side
    18,863.16x = 312,178,652.92
  5. Step 5: Solve for x
    x = 312,178,652.92/18,863.16
  6. Step 6: Final answer
    x = 16,549.65

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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.