Home / 30,661.68-42,309.96-18,727.92

Finding the Fourth Proportional to 30,661.68, 42,309.96 and 18,727.92

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Solution

The fourth proportional to 30,661.68, 42,309.96 and 18,727.92 is: 25,842.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,661.68 : 42,309.96 = 18,727.92 : x
  2. Step 2: Convert to fraction form
    30,661.68/42,309.96 = 18,727.92/x
  3. Step 3: Cross multiply
    30,661.68x = 42,309.96 × 18,727.92
  4. Step 4: Simplify right side
    30,661.68x = 792,377,546.08
  5. Step 5: Solve for x
    x = 792,377,546.08/30,661.68
  6. Step 6: Final answer
    x = 25,842.60

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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.