Home / 15,777.27-21,772.49-8,703.54

Finding the Fourth Proportional to 15,777.27, 21,772.49 and 8,703.54

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Solution

The fourth proportional to 15,777.27, 21,772.49 and 8,703.54 is: 12,010.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,777.27 : 21,772.49 = 8,703.54 : x
  2. Step 2: Convert to fraction form
    15,777.27/21,772.49 = 8,703.54/x
  3. Step 3: Cross multiply
    15,777.27x = 21,772.49 × 8,703.54
  4. Step 4: Simplify right side
    15,777.27x = 189,497,694.10
  5. Step 5: Solve for x
    x = 189,497,694.10/15,777.27
  6. Step 6: Final answer
    x = 12,010.80

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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.