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Finding the Fourth Proportional to 18,841.74, 28,263.21 and 9,476.64

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Solution

The fourth proportional to 18,841.74, 28,263.21 and 9,476.64 is: 14,215.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,841.74 : 28,263.21 = 9,476.64 : x
  2. Step 2: Convert to fraction form
    18,841.74/28,263.21 = 9,476.64/x
  3. Step 3: Cross multiply
    18,841.74x = 28,263.21 × 9,476.64
  4. Step 4: Simplify right side
    18,841.74x = 267,840,313.38
  5. Step 5: Solve for x
    x = 267,840,313.38/18,841.74
  6. Step 6: Final answer
    x = 14,215.27

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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.