Home / 30,997.88-42,777.38-16,850.76

Finding the Fourth Proportional to 30,997.88, 42,777.38 and 16,850.76

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Solution

The fourth proportional to 30,997.88, 42,777.38 and 16,850.76 is: 23,254.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,997.88 : 42,777.38 = 16,850.76 : x
  2. Step 2: Convert to fraction form
    30,997.88/42,777.38 = 16,850.76/x
  3. Step 3: Cross multiply
    30,997.88x = 42,777.38 × 16,850.76
  4. Step 4: Simplify right side
    30,997.88x = 720,831,363.81
  5. Step 5: Solve for x
    x = 720,831,363.81/30,997.88
  6. Step 6: Final answer
    x = 23,254.21

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Double scale
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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.