Home / 28,262.92-39,004.86-15,687.58

Finding the Fourth Proportional to 28,262.92, 39,004.86 and 15,687.58

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Solution

The fourth proportional to 28,262.92, 39,004.86 and 15,687.58 is: 21,649.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,262.92 : 39,004.86 = 15,687.58 : x
  2. Step 2: Convert to fraction form
    28,262.92/39,004.86 = 15,687.58/x
  3. Step 3: Cross multiply
    28,262.92x = 39,004.86 × 15,687.58
  4. Step 4: Simplify right side
    28,262.92x = 611,891,861.64
  5. Step 5: Solve for x
    x = 611,891,861.64/28,262.92
  6. Step 6: Final answer
    x = 21,649.99

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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.