Home / 30,660.22-42,312.27-18,728.92

Finding the Fourth Proportional to 30,660.22, 42,312.27 and 18,728.92

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Solution

The fourth proportional to 30,660.22, 42,312.27 and 18,728.92 is: 25,846.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,660.22 : 42,312.27 = 18,728.92 : x
  2. Step 2: Convert to fraction form
    30,660.22/42,312.27 = 18,728.92/x
  3. Step 3: Cross multiply
    30,660.22x = 42,312.27 × 18,728.92
  4. Step 4: Simplify right side
    30,660.22x = 792,463,119.85
  5. Step 5: Solve for x
    x = 792,463,119.85/30,660.22
  6. Step 6: Final answer
    x = 25,846.62

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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.