Home / 28,262.76-39,004.38-15,687.72

Finding the Fourth Proportional to 28,262.76, 39,004.38 and 15,687.72

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Solution

The fourth proportional to 28,262.76, 39,004.38 and 15,687.72 is: 21,650.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,262.76 : 39,004.38 = 15,687.72 : x
  2. Step 2: Convert to fraction form
    28,262.76/39,004.38 = 15,687.72/x
  3. Step 3: Cross multiply
    28,262.76x = 39,004.38 × 15,687.72
  4. Step 4: Simplify right side
    28,262.76x = 611,889,792.21
  5. Step 5: Solve for x
    x = 611,889,792.21/28,262.76
  6. Step 6: Final answer
    x = 21,650.04

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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.