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Finding the Fourth Proportional to 20,276.06, 27,978.48 and 11,323.26

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Solution

The fourth proportional to 20,276.06, 27,978.48 and 11,323.26 is: 15,624.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,276.06 : 27,978.48 = 11,323.26 : x
  2. Step 2: Convert to fraction form
    20,276.06/27,978.48 = 11,323.26/x
  3. Step 3: Cross multiply
    20,276.06x = 27,978.48 × 11,323.26
  4. Step 4: Simplify right side
    20,276.06x = 316,807,603.44
  5. Step 5: Solve for x
    x = 316,807,603.44/20,276.06
  6. Step 6: Final answer
    x = 15,624.72

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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.