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Finding the Fourth Proportional to 14,785.40, 22,188.90 and 10,411.40

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Solution

The fourth proportional to 14,785.40, 22,188.90 and 10,411.40 is: 15,624.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,785.40 : 22,188.90 = 10,411.40 : x
  2. Step 2: Convert to fraction form
    14,785.40/22,188.90 = 10,411.40/x
  3. Step 3: Cross multiply
    14,785.40x = 22,188.90 × 10,411.40
  4. Step 4: Simplify right side
    14,785.40x = 231,017,513.46
  5. Step 5: Solve for x
    x = 231,017,513.46/14,785.40
  6. Step 6: Final answer
    x = 15,624.71

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.