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Finding the Fourth Proportional to 18,775.44, 28,165.32 and 10,984.32

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Solution

The fourth proportional to 18,775.44, 28,165.32 and 10,984.32 is: 16,477.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,775.44 : 28,165.32 = 10,984.32 : x
  2. Step 2: Convert to fraction form
    18,775.44/28,165.32 = 10,984.32/x
  3. Step 3: Cross multiply
    18,775.44x = 28,165.32 × 10,984.32
  4. Step 4: Simplify right side
    18,775.44x = 309,376,887.78
  5. Step 5: Solve for x
    x = 309,376,887.78/18,775.44
  6. Step 6: Final answer
    x = 16,477.74

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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.