Home / 20,740.92-28,622.40-11,309.48

Finding the Fourth Proportional to 20,740.92, 28,622.40 and 11,309.48

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Solution

The fourth proportional to 20,740.92, 28,622.40 and 11,309.48 is: 15,607.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.92 : 28,622.40 = 11,309.48 : x
  2. Step 2: Convert to fraction form
    20,740.92/28,622.40 = 11,309.48/x
  3. Step 3: Cross multiply
    20,740.92x = 28,622.40 × 11,309.48
  4. Step 4: Simplify right side
    20,740.92x = 323,704,460.35
  5. Step 5: Solve for x
    x = 323,704,460.35/20,740.92
  6. Step 6: Final answer
    x = 15,607.04

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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.