Home / 30,610.15-42,242.08-16,998.20

Finding the Fourth Proportional to 30,610.15, 42,242.08 and 16,998.20

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Solution

The fourth proportional to 30,610.15, 42,242.08 and 16,998.20 is: 23,457.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,610.15 : 42,242.08 = 16,998.20 : x
  2. Step 2: Convert to fraction form
    30,610.15/42,242.08 = 16,998.20/x
  3. Step 3: Cross multiply
    30,610.15x = 42,242.08 × 16,998.20
  4. Step 4: Simplify right side
    30,610.15x = 718,039,546.25
  5. Step 5: Solve for x
    x = 718,039,546.25/30,610.15
  6. Step 6: Final answer
    x = 23,457.56

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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.