Home / 30,996.12-42,775.79-16,850.01

Finding the Fourth Proportional to 30,996.12, 42,775.79 and 16,850.01

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Solution

The fourth proportional to 30,996.12, 42,775.79 and 16,850.01 is: 23,253.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,996.12 : 42,775.79 = 16,850.01 : x
  2. Step 2: Convert to fraction form
    30,996.12/42,775.79 = 16,850.01/x
  3. Step 3: Cross multiply
    30,996.12x = 42,775.79 × 16,850.01
  4. Step 4: Simplify right side
    30,996.12x = 720,772,405.01
  5. Step 5: Solve for x
    x = 720,772,405.01/30,996.12
  6. Step 6: Final answer
    x = 23,253.63

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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.