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Finding the Fourth Proportional to 21,999.60, 32,950.80 and 11,599.20

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Solution

The fourth proportional to 21,999.60, 32,950.80 and 11,599.20 is: 17,373.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,999.60 : 32,950.80 = 11,599.20 : x
  2. Step 2: Convert to fraction form
    21,999.60/32,950.80 = 11,599.20/x
  3. Step 3: Cross multiply
    21,999.60x = 32,950.80 × 11,599.20
  4. Step 4: Simplify right side
    21,999.60x = 382,202,919.36
  5. Step 5: Solve for x
    x = 382,202,919.36/21,999.60
  6. Step 6: Final answer
    x = 17,373.18

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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.