Home / 20,756.88-31,085.64-11,382.48

Finding the Fourth Proportional to 20,756.88, 31,085.64 and 11,382.48

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Solution

The fourth proportional to 20,756.88, 31,085.64 and 11,382.48 is: 17,046.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756.88 : 31,085.64 = 11,382.48 : x
  2. Step 2: Convert to fraction form
    20,756.88/31,085.64 = 11,382.48/x
  3. Step 3: Cross multiply
    20,756.88x = 31,085.64 × 11,382.48
  4. Step 4: Simplify right side
    20,756.88x = 353,831,675.59
  5. Step 5: Solve for x
    x = 353,831,675.59/20,756.88
  6. Step 6: Final answer
    x = 17,046.48

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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.