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Finding the Fourth Proportional to 18,752.96, 28,122.72 and 5,602.88

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Solution

The fourth proportional to 18,752.96, 28,122.72 and 5,602.88 is: 8,402.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,752.96 : 28,122.72 = 5,602.88 : x
  2. Step 2: Convert to fraction form
    18,752.96/28,122.72 = 5,602.88/x
  3. Step 3: Cross multiply
    18,752.96x = 28,122.72 × 5,602.88
  4. Step 4: Simplify right side
    18,752.96x = 157,568,225.43
  5. Step 5: Solve for x
    x = 157,568,225.43/18,752.96
  6. Step 6: Final answer
    x = 8,402.31

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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.