Home / 20,960.16-28,923.96-11,529.12

Finding the Fourth Proportional to 20,960.16, 28,923.96 and 11,529.12

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Solution

The fourth proportional to 20,960.16, 28,923.96 and 11,529.12 is: 15,909.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.16 : 28,923.96 = 11,529.12 : x
  2. Step 2: Convert to fraction form
    20,960.16/28,923.96 = 11,529.12/x
  3. Step 3: Cross multiply
    20,960.16x = 28,923.96 × 11,529.12
  4. Step 4: Simplify right side
    20,960.16x = 333,467,805.72
  5. Step 5: Solve for x
    x = 333,467,805.72/20,960.16
  6. Step 6: Final answer
    x = 15,909.60

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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.