Home / 13,918.72-19,214.40-8,617

Finding the Fourth Proportional to 13,918.72, 19,214.40 and 8,617

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Solution

The fourth proportional to 13,918.72, 19,214.40 and 8,617 is: 11,895.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.72 : 19,214.40 = 8,617 : x
  2. Step 2: Convert to fraction form
    13,918.72/19,214.40 = 8,617/x
  3. Step 3: Cross multiply
    13,918.72x = 19,214.40 × 8,617
  4. Step 4: Simplify right side
    13,918.72x = 165,570,484.80
  5. Step 5: Solve for x
    x = 165,570,484.80/13,918.72
  6. Step 6: Final answer
    x = 11,895.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.