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Finding the Fourth Proportional to 13,258.88, 19,894.08 and 11,801.60

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Solution

The fourth proportional to 13,258.88, 19,894.08 and 11,801.60 is: 17,707.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,258.88 : 19,894.08 = 11,801.60 : x
  2. Step 2: Convert to fraction form
    13,258.88/19,894.08 = 11,801.60/x
  3. Step 3: Cross multiply
    13,258.88x = 19,894.08 × 11,801.60
  4. Step 4: Simplify right side
    13,258.88x = 234,781,974.53
  5. Step 5: Solve for x
    x = 234,781,974.53/13,258.88
  6. Step 6: Final answer
    x = 17,707.53

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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.