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Finding the Fourth Proportional to 18,570.96, 25,632.80 and 11,503.30

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Solution

The fourth proportional to 18,570.96, 25,632.80 and 11,503.30 is: 15,877.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,570.96 : 25,632.80 = 11,503.30 : x
  2. Step 2: Convert to fraction form
    18,570.96/25,632.80 = 11,503.30/x
  3. Step 3: Cross multiply
    18,570.96x = 25,632.80 × 11,503.30
  4. Step 4: Simplify right side
    18,570.96x = 294,861,788.24
  5. Step 5: Solve for x
    x = 294,861,788.24/18,570.96
  6. Step 6: Final answer
    x = 15,877.58

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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.