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Finding the Fourth Proportional to 21,557.51, 32,336.43 and 7,517.51

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Solution

The fourth proportional to 21,557.51, 32,336.43 and 7,517.51 is: 11,276.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,557.51 : 32,336.43 = 7,517.51 : x
  2. Step 2: Convert to fraction form
    21,557.51/32,336.43 = 7,517.51/x
  3. Step 3: Cross multiply
    21,557.51x = 32,336.43 × 7,517.51
  4. Step 4: Simplify right side
    21,557.51x = 243,089,591.46
  5. Step 5: Solve for x
    x = 243,089,591.46/21,557.51
  6. Step 6: Final answer
    x = 11,276.33

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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.