Home / 19,318.28-28,967.58-8,921

Finding the Fourth Proportional to 19,318.28, 28,967.58 and 8,921

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Solution

The fourth proportional to 19,318.28, 28,967.58 and 8,921 is: 13,376.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,318.28 : 28,967.58 = 8,921 : x
  2. Step 2: Convert to fraction form
    19,318.28/28,967.58 = 8,921/x
  3. Step 3: Cross multiply
    19,318.28x = 28,967.58 × 8,921
  4. Step 4: Simplify right side
    19,318.28x = 258,419,781.18
  5. Step 5: Solve for x
    x = 258,419,781.18/19,318.28
  6. Step 6: Final answer
    x = 13,376.96

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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.