Home / 20,764.08-28,655.16-11,333.28

Finding the Fourth Proportional to 20,764.08, 28,655.16 and 11,333.28

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Solution

The fourth proportional to 20,764.08, 28,655.16 and 11,333.28 is: 15,640.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.08 : 28,655.16 = 11,333.28 : x
  2. Step 2: Convert to fraction form
    20,764.08/28,655.16 = 11,333.28/x
  3. Step 3: Cross multiply
    20,764.08x = 28,655.16 × 11,333.28
  4. Step 4: Simplify right side
    20,764.08x = 324,756,951.72
  5. Step 5: Solve for x
    x = 324,756,951.72/20,764.08
  6. Step 6: Final answer
    x = 15,640.32

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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.