Home / 20,807.06-28,710.88-11,852.83

Finding the Fourth Proportional to 20,807.06, 28,710.88 and 11,852.83

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Solution

The fourth proportional to 20,807.06, 28,710.88 and 11,852.83 is: 16,355.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.06 : 28,710.88 = 11,852.83 : x
  2. Step 2: Convert to fraction form
    20,807.06/28,710.88 = 11,852.83/x
  3. Step 3: Cross multiply
    20,807.06x = 28,710.88 × 11,852.83
  4. Step 4: Simplify right side
    20,807.06x = 340,305,179.79
  5. Step 5: Solve for x
    x = 340,305,179.79/20,807.06
  6. Step 6: Final answer
    x = 16,355.27

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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.