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Finding the Fourth Proportional to 18,854.88, 28,272.28 and 5,703.72

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Solution

The fourth proportional to 18,854.88, 28,272.28 and 5,703.72 is: 8,552.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,854.88 : 28,272.28 = 5,703.72 : x
  2. Step 2: Convert to fraction form
    18,854.88/28,272.28 = 5,703.72/x
  3. Step 3: Cross multiply
    18,854.88x = 28,272.28 × 5,703.72
  4. Step 4: Simplify right side
    18,854.88x = 161,257,168.88
  5. Step 5: Solve for x
    x = 161,257,168.88/18,854.88
  6. Step 6: Final answer
    x = 8,552.54

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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.