Home / 20,726.75-28,603.12-11,295.52

Finding the Fourth Proportional to 20,726.75, 28,603.12 and 11,295.52

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Solution

The fourth proportional to 20,726.75, 28,603.12 and 11,295.52 is: 15,587.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726.75 : 28,603.12 = 11,295.52 : x
  2. Step 2: Convert to fraction form
    20,726.75/28,603.12 = 11,295.52/x
  3. Step 3: Cross multiply
    20,726.75x = 28,603.12 × 11,295.52
  4. Step 4: Simplify right side
    20,726.75x = 323,086,942.77
  5. Step 5: Solve for x
    x = 323,086,942.77/20,726.75
  6. Step 6: Final answer
    x = 15,587.92

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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.