Home / 20,737.49-28,616.50-11,783.75

Finding the Fourth Proportional to 20,737.49, 28,616.50 and 11,783.75

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Solution

The fourth proportional to 20,737.49, 28,616.50 and 11,783.75 is: 16,260.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737.49 : 28,616.50 = 11,783.75 : x
  2. Step 2: Convert to fraction form
    20,737.49/28,616.50 = 11,783.75/x
  3. Step 3: Cross multiply
    20,737.49x = 28,616.50 × 11,783.75
  4. Step 4: Simplify right side
    20,737.49x = 337,209,747.63
  5. Step 5: Solve for x
    x = 337,209,747.63/20,737.49
  6. Step 6: Final answer
    x = 16,260.88

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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.