Home / 20,735.47-28,606.83-12,763.86

Finding the Fourth Proportional to 20,735.47, 28,606.83 and 12,763.86

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Solution

The fourth proportional to 20,735.47, 28,606.83 and 12,763.86 is: 17,609.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.47 : 28,606.83 = 12,763.86 : x
  2. Step 2: Convert to fraction form
    20,735.47/28,606.83 = 12,763.86/x
  3. Step 3: Cross multiply
    20,735.47x = 28,606.83 × 12,763.86
  4. Step 4: Simplify right side
    20,735.47x = 365,133,573.16
  5. Step 5: Solve for x
    x = 365,133,573.16/20,735.47
  6. Step 6: Final answer
    x = 17,609.13

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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.