Home / 16,015.72-22,116.90-15,143.08

Finding the Fourth Proportional to 16,015.72, 22,116.90 and 15,143.08

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Solution

The fourth proportional to 16,015.72, 22,116.90 and 15,143.08 is: 20,911.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,015.72 : 22,116.90 = 15,143.08 : x
  2. Step 2: Convert to fraction form
    16,015.72/22,116.90 = 15,143.08/x
  3. Step 3: Cross multiply
    16,015.72x = 22,116.90 × 15,143.08
  4. Step 4: Simplify right side
    16,015.72x = 334,917,986.05
  5. Step 5: Solve for x
    x = 334,917,986.05/16,015.72
  6. Step 6: Final answer
    x = 20,911.83

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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.