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Finding the Fourth Proportional to 32,990.64, 45,542.82 and 18,840.78

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Solution

The fourth proportional to 32,990.64, 45,542.82 and 18,840.78 is: 26,009.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,990.64 : 45,542.82 = 18,840.78 : x
  2. Step 2: Convert to fraction form
    32,990.64/45,542.82 = 18,840.78/x
  3. Step 3: Cross multiply
    32,990.64x = 45,542.82 × 18,840.78
  4. Step 4: Simplify right side
    32,990.64x = 858,062,252.20
  5. Step 5: Solve for x
    x = 858,062,252.20/32,990.64
  6. Step 6: Final answer
    x = 26,009.26

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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.