Home / 20,807.73-28,710.18-11,852.78

Finding the Fourth Proportional to 20,807.73, 28,710.18 and 11,852.78

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Solution

The fourth proportional to 20,807.73, 28,710.18 and 11,852.78 is: 16,354.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.73 : 28,710.18 = 11,852.78 : x
  2. Step 2: Convert to fraction form
    20,807.73/28,710.18 = 11,852.78/x
  3. Step 3: Cross multiply
    20,807.73x = 28,710.18 × 11,852.78
  4. Step 4: Simplify right side
    20,807.73x = 340,295,303.75
  5. Step 5: Solve for x
    x = 340,295,303.75/20,807.73
  6. Step 6: Final answer
    x = 16,354.27

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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.