Home / 20,743.92-28,628.81-12,682.29

Finding the Fourth Proportional to 20,743.92, 28,628.81 and 12,682.29

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Solution

The fourth proportional to 20,743.92, 28,628.81 and 12,682.29 is: 17,502.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.92 : 28,628.81 = 12,682.29 : x
  2. Step 2: Convert to fraction form
    20,743.92/28,628.81 = 12,682.29/x
  3. Step 3: Cross multiply
    20,743.92x = 28,628.81 × 12,682.29
  4. Step 4: Simplify right side
    20,743.92x = 363,078,870.77
  5. Step 5: Solve for x
    x = 363,078,870.77/20,743.92
  6. Step 6: Final answer
    x = 17,502.91

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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.