Home / 20,182.34-27,865.36-12,631.72

Finding the Fourth Proportional to 20,182.34, 27,865.36 and 12,631.72

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Solution

The fourth proportional to 20,182.34, 27,865.36 and 12,631.72 is: 17,440.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,182.34 : 27,865.36 = 12,631.72 : x
  2. Step 2: Convert to fraction form
    20,182.34/27,865.36 = 12,631.72/x
  3. Step 3: Cross multiply
    20,182.34x = 27,865.36 × 12,631.72
  4. Step 4: Simplify right side
    20,182.34x = 351,987,425.22
  5. Step 5: Solve for x
    x = 351,987,425.22/20,182.34
  6. Step 6: Final answer
    x = 17,440.37

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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.