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Finding the Fourth Proportional to 18,926.91, 28,407.89 and 9,573.55

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Solution

The fourth proportional to 18,926.91, 28,407.89 and 9,573.55 is: 14,369.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,926.91 : 28,407.89 = 9,573.55 : x
  2. Step 2: Convert to fraction form
    18,926.91/28,407.89 = 9,573.55/x
  3. Step 3: Cross multiply
    18,926.91x = 28,407.89 × 9,573.55
  4. Step 4: Simplify right side
    18,926.91x = 271,964,308.22
  5. Step 5: Solve for x
    x = 271,964,308.22/18,926.91
  6. Step 6: Final answer
    x = 14,369.19

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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.