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Finding the Fourth Proportional to 28,936.60, 43,404.90 and 17,661.40

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Solution

The fourth proportional to 28,936.60, 43,404.90 and 17,661.40 is: 26,492.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,936.60 : 43,404.90 = 17,661.40 : x
  2. Step 2: Convert to fraction form
    28,936.60/43,404.90 = 17,661.40/x
  3. Step 3: Cross multiply
    28,936.60x = 43,404.90 × 17,661.40
  4. Step 4: Simplify right side
    28,936.60x = 766,591,300.86
  5. Step 5: Solve for x
    x = 766,591,300.86/28,936.60
  6. Step 6: Final answer
    x = 26,492.10

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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.