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Finding the Fourth Proportional to 23,218.56, 32,057.88 and 20,509.08

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Solution

The fourth proportional to 23,218.56, 32,057.88 and 20,509.08 is: 28,316.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,218.56 : 32,057.88 = 20,509.08 : x
  2. Step 2: Convert to fraction form
    23,218.56/32,057.88 = 20,509.08/x
  3. Step 3: Cross multiply
    23,218.56x = 32,057.88 × 20,509.08
  4. Step 4: Simplify right side
    23,218.56x = 657,477,625.55
  5. Step 5: Solve for x
    x = 657,477,625.55/23,218.56
  6. Step 6: Final answer
    x = 28,316.90

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.