Home / 20,756.26-28,643.88-11,324.98

Finding the Fourth Proportional to 20,756.26, 28,643.88 and 11,324.98

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Solution

The fourth proportional to 20,756.26, 28,643.88 and 11,324.98 is: 15,628.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756.26 : 28,643.88 = 11,324.98 : x
  2. Step 2: Convert to fraction form
    20,756.26/28,643.88 = 11,324.98/x
  3. Step 3: Cross multiply
    20,756.26x = 28,643.88 × 11,324.98
  4. Step 4: Simplify right side
    20,756.26x = 324,391,368.12
  5. Step 5: Solve for x
    x = 324,391,368.12/20,756.26
  6. Step 6: Final answer
    x = 15,628.60

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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.