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Finding the Fourth Proportional to 27,010.40, 40,513.28 and 7,288.80

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Solution

The fourth proportional to 27,010.40, 40,513.28 and 7,288.80 is: 10,932.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,010.40 : 40,513.28 = 7,288.80 : x
  2. Step 2: Convert to fraction form
    27,010.40/40,513.28 = 7,288.80/x
  3. Step 3: Cross multiply
    27,010.40x = 40,513.28 × 7,288.80
  4. Step 4: Simplify right side
    27,010.40x = 295,293,195.26
  5. Step 5: Solve for x
    x = 295,293,195.26/27,010.40
  6. Step 6: Final answer
    x = 10,932.57

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1.5x scale

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.