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Finding the Fourth Proportional to 18,797.76, 28,196.68 and 7,558.28

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Solution

The fourth proportional to 18,797.76, 28,196.68 and 7,558.28 is: 11,337.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,797.76 : 28,196.68 = 7,558.28 : x
  2. Step 2: Convert to fraction form
    18,797.76/28,196.68 = 7,558.28/x
  3. Step 3: Cross multiply
    18,797.76x = 28,196.68 × 7,558.28
  4. Step 4: Simplify right side
    18,797.76x = 213,118,402.51
  5. Step 5: Solve for x
    x = 213,118,402.51/18,797.76
  6. Step 6: Final answer
    x = 11,337.44

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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.