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Finding the Fourth Proportional to 28,998.72, 43,492.87 and 13,200.08

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Solution

The fourth proportional to 28,998.72, 43,492.87 and 13,200.08 is: 19,797.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,998.72 : 43,492.87 = 13,200.08 : x
  2. Step 2: Convert to fraction form
    28,998.72/43,492.87 = 13,200.08/x
  3. Step 3: Cross multiply
    28,998.72x = 43,492.87 × 13,200.08
  4. Step 4: Simplify right side
    28,998.72x = 574,109,363.43
  5. Step 5: Solve for x
    x = 574,109,363.43/28,998.72
  6. Step 6: Final answer
    x = 19,797.75

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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.