Home / 13,042.08-18,010.76-11,142.50

Finding the Fourth Proportional to 13,042.08, 18,010.76 and 11,142.50

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Solution

The fourth proportional to 13,042.08, 18,010.76 and 11,142.50 is: 15,387.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,042.08 : 18,010.76 = 11,142.50 : x
  2. Step 2: Convert to fraction form
    13,042.08/18,010.76 = 11,142.50/x
  3. Step 3: Cross multiply
    13,042.08x = 18,010.76 × 11,142.50
  4. Step 4: Simplify right side
    13,042.08x = 200,684,747.53
  5. Step 5: Solve for x
    x = 200,684,747.53/13,042.08
  6. Step 6: Final answer
    x = 15,387.48

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1.5x scale

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.