Home / 15,016.03-20,723.40-8,728

Finding the Fourth Proportional to 15,016.03, 20,723.40 and 8,728

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Solution

The fourth proportional to 15,016.03, 20,723.40 and 8,728 is: 12,045.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016.03 : 20,723.40 = 8,728 : x
  2. Step 2: Convert to fraction form
    15,016.03/20,723.40 = 8,728/x
  3. Step 3: Cross multiply
    15,016.03x = 20,723.40 × 8,728
  4. Step 4: Simplify right side
    15,016.03x = 180,873,835.20
  5. Step 5: Solve for x
    x = 180,873,835.20/15,016.03
  6. Step 6: Final answer
    x = 12,045.38

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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.