Home / 13,042.67-17,985.65-11,160.50

Finding the Fourth Proportional to 13,042.67, 17,985.65 and 11,160.50

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Solution

The fourth proportional to 13,042.67, 17,985.65 and 11,160.50 is: 15,390.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,042.67 : 17,985.65 = 11,160.50 : x
  2. Step 2: Convert to fraction form
    13,042.67/17,985.65 = 11,160.50/x
  3. Step 3: Cross multiply
    13,042.67x = 17,985.65 × 11,160.50
  4. Step 4: Simplify right side
    13,042.67x = 200,728,701.09
  5. Step 5: Solve for x
    x = 200,728,701.09/13,042.67
  6. Step 6: Final answer
    x = 15,390.16

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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.