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Finding the Fourth Proportional to 32,997.60, 45,539.28 and 18,855

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Solution

The fourth proportional to 32,997.60, 45,539.28 and 18,855 is: 26,021.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,997.60 : 45,539.28 = 18,855 : x
  2. Step 2: Convert to fraction form
    32,997.60/45,539.28 = 18,855/x
  3. Step 3: Cross multiply
    32,997.60x = 45,539.28 × 18,855
  4. Step 4: Simplify right side
    32,997.60x = 858,643,124.40
  5. Step 5: Solve for x
    x = 858,643,124.40/32,997.60
  6. Step 6: Final answer
    x = 26,021.38

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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.