Home / 19,171.44-28,718.28-9,918

Finding the Fourth Proportional to 19,171.44, 28,718.28 and 9,918

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Solution

The fourth proportional to 19,171.44, 28,718.28 and 9,918 is: 14,856.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,171.44 : 28,718.28 = 9,918 : x
  2. Step 2: Convert to fraction form
    19,171.44/28,718.28 = 9,918/x
  3. Step 3: Cross multiply
    19,171.44x = 28,718.28 × 9,918
  4. Step 4: Simplify right side
    19,171.44x = 284,827,901.04
  5. Step 5: Solve for x
    x = 284,827,901.04/19,171.44
  6. Step 6: Final answer
    x = 14,856.89

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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.