Home / 20,101.61-27,722.08-12,548.64

Finding the Fourth Proportional to 20,101.61, 27,722.08 and 12,548.64

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Solution

The fourth proportional to 20,101.61, 27,722.08 and 12,548.64 is: 17,305.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.61 : 27,722.08 = 12,548.64 : x
  2. Step 2: Convert to fraction form
    20,101.61/27,722.08 = 12,548.64/x
  3. Step 3: Cross multiply
    20,101.61x = 27,722.08 × 12,548.64
  4. Step 4: Simplify right side
    20,101.61x = 347,874,370.60
  5. Step 5: Solve for x
    x = 347,874,370.60/20,101.61
  6. Step 6: Final answer
    x = 17,305.79

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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.