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Finding the Fourth Proportional to 30,585.44, 42,216.64 and 18,017.44

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Solution

The fourth proportional to 30,585.44, 42,216.64 and 18,017.44 is: 24,869.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,585.44 : 42,216.64 = 18,017.44 : x
  2. Step 2: Convert to fraction form
    30,585.44/42,216.64 = 18,017.44/x
  3. Step 3: Cross multiply
    30,585.44x = 42,216.64 × 18,017.44
  4. Step 4: Simplify right side
    30,585.44x = 760,635,778.20
  5. Step 5: Solve for x
    x = 760,635,778.20/30,585.44
  6. Step 6: Final answer
    x = 24,869.21

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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.