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Finding the Fourth Proportional to 18,893.58, 28,337.18 and 6,239.43

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Solution

The fourth proportional to 18,893.58, 28,337.18 and 6,239.43 is: 9,358.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,893.58 : 28,337.18 = 6,239.43 : x
  2. Step 2: Convert to fraction form
    18,893.58/28,337.18 = 6,239.43/x
  3. Step 3: Cross multiply
    18,893.58x = 28,337.18 × 6,239.43
  4. Step 4: Simplify right side
    18,893.58x = 176,807,819.81
  5. Step 5: Solve for x
    x = 176,807,819.81/18,893.58
  6. Step 6: Final answer
    x = 9,358.09

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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.