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Finding the Fourth Proportional to 19,201.60, 26,489.60 and 11,240.32

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Solution

The fourth proportional to 19,201.60, 26,489.60 and 11,240.32 is: 15,506.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,201.60 : 26,489.60 = 11,240.32 : x
  2. Step 2: Convert to fraction form
    19,201.60/26,489.60 = 11,240.32/x
  3. Step 3: Cross multiply
    19,201.60x = 26,489.60 × 11,240.32
  4. Step 4: Simplify right side
    19,201.60x = 297,751,580.67
  5. Step 5: Solve for x
    x = 297,751,580.67/19,201.60
  6. Step 6: Final answer
    x = 15,506.60

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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.