Home / 18,035.40-27,028.80-6,931.92

Finding the Fourth Proportional to 18,035.40, 27,028.80 and 6,931.92

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Solution

The fourth proportional to 18,035.40, 27,028.80 and 6,931.92 is: 10,388.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,035.40 : 27,028.80 = 6,931.92 : x
  2. Step 2: Convert to fraction form
    18,035.40/27,028.80 = 6,931.92/x
  3. Step 3: Cross multiply
    18,035.40x = 27,028.80 × 6,931.92
  4. Step 4: Simplify right side
    18,035.40x = 187,361,479.30
  5. Step 5: Solve for x
    x = 187,361,479.30/18,035.40
  6. Step 6: Final answer
    x = 10,388.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.