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Finding the Fourth Proportional to 18,893.76, 28,333.47 and 5,563.08

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Solution

The fourth proportional to 18,893.76, 28,333.47 and 5,563.08 is: 8,342.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,893.76 : 28,333.47 = 5,563.08 : x
  2. Step 2: Convert to fraction form
    18,893.76/28,333.47 = 5,563.08/x
  3. Step 3: Cross multiply
    18,893.76x = 28,333.47 × 5,563.08
  4. Step 4: Simplify right side
    18,893.76x = 157,621,360.29
  5. Step 5: Solve for x
    x = 157,621,360.29/18,893.76
  6. Step 6: Final answer
    x = 8,342.51

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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.