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Finding the Fourth Proportional to 21,738.60, 32,599.80 and 7,693.20

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Solution

The fourth proportional to 21,738.60, 32,599.80 and 7,693.20 is: 11,536.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,738.60 : 32,599.80 = 7,693.20 : x
  2. Step 2: Convert to fraction form
    21,738.60/32,599.80 = 7,693.20/x
  3. Step 3: Cross multiply
    21,738.60x = 32,599.80 × 7,693.20
  4. Step 4: Simplify right side
    21,738.60x = 250,796,781.36
  5. Step 5: Solve for x
    x = 250,796,781.36/21,738.60
  6. Step 6: Final answer
    x = 11,536.93

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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.