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Finding the Fourth Proportional to 27,140.44, 40,710.72 and 13,279.72

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Solution

The fourth proportional to 27,140.44, 40,710.72 and 13,279.72 is: 19,919.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,140.44 : 40,710.72 = 13,279.72 : x
  2. Step 2: Convert to fraction form
    27,140.44/40,710.72 = 13,279.72/x
  3. Step 3: Cross multiply
    27,140.44x = 40,710.72 × 13,279.72
  4. Step 4: Simplify right side
    27,140.44x = 540,626,962.60
  5. Step 5: Solve for x
    x = 540,626,962.60/27,140.44
  6. Step 6: Final answer
    x = 19,919.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.