Home / 20,617.92-28,479.43-15,251.27

Finding the Fourth Proportional to 20,617.92, 28,479.43 and 15,251.27

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Solution

The fourth proportional to 20,617.92, 28,479.43 and 15,251.27 is: 21,066.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617.92 : 28,479.43 = 15,251.27 : x
  2. Step 2: Convert to fraction form
    20,617.92/28,479.43 = 15,251.27/x
  3. Step 3: Cross multiply
    20,617.92x = 28,479.43 × 15,251.27
  4. Step 4: Simplify right side
    20,617.92x = 434,347,420.45
  5. Step 5: Solve for x
    x = 434,347,420.45/20,617.92
  6. Step 6: Final answer
    x = 21,066.50

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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.