Home / 20,688.84-28,553.54-11,738.57

Finding the Fourth Proportional to 20,688.84, 28,553.54 and 11,738.57

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Solution

The fourth proportional to 20,688.84, 28,553.54 and 11,738.57 is: 16,200.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.84 : 28,553.54 = 11,738.57 : x
  2. Step 2: Convert to fraction form
    20,688.84/28,553.54 = 11,738.57/x
  3. Step 3: Cross multiply
    20,688.84x = 28,553.54 × 11,738.57
  4. Step 4: Simplify right side
    20,688.84x = 335,177,526.58
  5. Step 5: Solve for x
    x = 335,177,526.58/20,688.84
  6. Step 6: Final answer
    x = 16,200.89

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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.