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Finding the Fourth Proportional to 18,854.76, 28,262.70 and 8,473.80

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Solution

The fourth proportional to 18,854.76, 28,262.70 and 8,473.80 is: 12,701.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,854.76 : 28,262.70 = 8,473.80 : x
  2. Step 2: Convert to fraction form
    18,854.76/28,262.70 = 8,473.80/x
  3. Step 3: Cross multiply
    18,854.76x = 28,262.70 × 8,473.80
  4. Step 4: Simplify right side
    18,854.76x = 239,492,467.26
  5. Step 5: Solve for x
    x = 239,492,467.26/18,854.76
  6. Step 6: Final answer
    x = 12,701.96

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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.