Home / 20,133.77-27,787.05-12,178.35

Finding the Fourth Proportional to 20,133.77, 27,787.05 and 12,178.35

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Solution

The fourth proportional to 20,133.77, 27,787.05 and 12,178.35 is: 16,807.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.77 : 27,787.05 = 12,178.35 : x
  2. Step 2: Convert to fraction form
    20,133.77/27,787.05 = 12,178.35/x
  3. Step 3: Cross multiply
    20,133.77x = 27,787.05 × 12,178.35
  4. Step 4: Simplify right side
    20,133.77x = 338,400,420.37
  5. Step 5: Solve for x
    x = 338,400,420.37/20,133.77
  6. Step 6: Final answer
    x = 16,807.61

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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.