Home / 20,769.23-28,661.60-11,337.95

Finding the Fourth Proportional to 20,769.23, 28,661.60 and 11,337.95

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Solution

The fourth proportional to 20,769.23, 28,661.60 and 11,337.95 is: 15,646.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.23 : 28,661.60 = 11,337.95 : x
  2. Step 2: Convert to fraction form
    20,769.23/28,661.60 = 11,337.95/x
  3. Step 3: Cross multiply
    20,769.23x = 28,661.60 × 11,337.95
  4. Step 4: Simplify right side
    20,769.23x = 324,963,787.72
  5. Step 5: Solve for x
    x = 324,963,787.72/20,769.23
  6. Step 6: Final answer
    x = 15,646.41

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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.