Home / 20,952.09-28,912.82-11,518.83

Finding the Fourth Proportional to 20,952.09, 28,912.82 and 11,518.83

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Solution

The fourth proportional to 20,952.09, 28,912.82 and 11,518.83 is: 15,895.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,952.09 : 28,912.82 = 11,518.83 : x
  2. Step 2: Convert to fraction form
    20,952.09/28,912.82 = 11,518.83/x
  3. Step 3: Cross multiply
    20,952.09x = 28,912.82 × 11,518.83
  4. Step 4: Simplify right side
    20,952.09x = 333,041,800.81
  5. Step 5: Solve for x
    x = 333,041,800.81/20,952.09
  6. Step 6: Final answer
    x = 15,895.40

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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.