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Finding the Fourth Proportional to 18,089.30, 24,966.23 and 12,419.40

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Solution

The fourth proportional to 18,089.30, 24,966.23 and 12,419.40 is: 17,140.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,089.30 : 24,966.23 = 12,419.40 : x
  2. Step 2: Convert to fraction form
    18,089.30/24,966.23 = 12,419.40/x
  3. Step 3: Cross multiply
    18,089.30x = 24,966.23 × 12,419.40
  4. Step 4: Simplify right side
    18,089.30x = 310,065,534.77
  5. Step 5: Solve for x
    x = 310,065,534.77/18,089.30
  6. Step 6: Final answer
    x = 17,140.83

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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.