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Finding the Fourth Proportional to 30,995.75, 42,773.94 and 16,848.60

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Solution

The fourth proportional to 30,995.75, 42,773.94 and 16,848.60 is: 23,250.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,995.75 : 42,773.94 = 16,848.60 : x
  2. Step 2: Convert to fraction form
    30,995.75/42,773.94 = 16,848.60/x
  3. Step 3: Cross multiply
    30,995.75x = 42,773.94 × 16,848.60
  4. Step 4: Simplify right side
    30,995.75x = 720,681,005.48
  5. Step 5: Solve for x
    x = 720,681,005.48/30,995.75
  6. Step 6: Final answer
    x = 23,250.96

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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.