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Finding the Fourth Proportional to 12,609.60, 19,008.88 and 11,763.84

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Solution

The fourth proportional to 12,609.60, 19,008.88 and 11,763.84 is: 17,733.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,609.60 : 19,008.88 = 11,763.84 : x
  2. Step 2: Convert to fraction form
    12,609.60/19,008.88 = 11,763.84/x
  3. Step 3: Cross multiply
    12,609.60x = 19,008.88 × 11,763.84
  4. Step 4: Simplify right side
    12,609.60x = 223,617,422.90
  5. Step 5: Solve for x
    x = 223,617,422.90/12,609.60
  6. Step 6: Final answer
    x = 17,733.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.