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Finding the Fourth Proportional to 22,009.60, 32,965.80 and 11,609.20

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Solution

The fourth proportional to 22,009.60, 32,965.80 and 11,609.20 is: 17,388.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,009.60 : 32,965.80 = 11,609.20 : x
  2. Step 2: Convert to fraction form
    22,009.60/32,965.80 = 11,609.20/x
  3. Step 3: Cross multiply
    22,009.60x = 32,965.80 × 11,609.20
  4. Step 4: Simplify right side
    22,009.60x = 382,706,565.36
  5. Step 5: Solve for x
    x = 382,706,565.36/22,009.60
  6. Step 6: Final answer
    x = 17,388.17

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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.