Home / 28,118.15-38,801.87-16,181.90

Finding the Fourth Proportional to 28,118.15, 38,801.87 and 16,181.90

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Solution

The fourth proportional to 28,118.15, 38,801.87 and 16,181.90 is: 22,330.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,118.15 : 38,801.87 = 16,181.90 : x
  2. Step 2: Convert to fraction form
    28,118.15/38,801.87 = 16,181.90/x
  3. Step 3: Cross multiply
    28,118.15x = 38,801.87 × 16,181.90
  4. Step 4: Simplify right side
    28,118.15x = 627,887,899.24
  5. Step 5: Solve for x
    x = 627,887,899.24/28,118.15
  6. Step 6: Final answer
    x = 22,330.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.