Home / 20,369.28-28,110.08-11,416.36

Finding the Fourth Proportional to 20,369.28, 28,110.08 and 11,416.36

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Solution

The fourth proportional to 20,369.28, 28,110.08 and 11,416.36 is: 15,754.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,369.28 : 28,110.08 = 11,416.36 : x
  2. Step 2: Convert to fraction form
    20,369.28/28,110.08 = 11,416.36/x
  3. Step 3: Cross multiply
    20,369.28x = 28,110.08 × 11,416.36
  4. Step 4: Simplify right side
    20,369.28x = 320,914,792.91
  5. Step 5: Solve for x
    x = 320,914,792.91/20,369.28
  6. Step 6: Final answer
    x = 15,754.84

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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.