Home / 20,726.88-28,603.29-11,295.64

Finding the Fourth Proportional to 20,726.88, 28,603.29 and 11,295.64

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Solution

The fourth proportional to 20,726.88, 28,603.29 and 11,295.64 is: 15,588.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726.88 : 28,603.29 = 11,295.64 : x
  2. Step 2: Convert to fraction form
    20,726.88/28,603.29 = 11,295.64/x
  3. Step 3: Cross multiply
    20,726.88x = 28,603.29 × 11,295.64
  4. Step 4: Simplify right side
    20,726.88x = 323,092,466.66
  5. Step 5: Solve for x
    x = 323,092,466.66/20,726.88
  6. Step 6: Final answer
    x = 15,588.09

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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.