Home / 20,726.38-28,603.01-11,295.55

Finding the Fourth Proportional to 20,726.38, 28,603.01 and 11,295.55

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Solution

The fourth proportional to 20,726.38, 28,603.01 and 11,295.55 is: 15,588.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726.38 : 28,603.01 = 11,295.55 : x
  2. Step 2: Convert to fraction form
    20,726.38/28,603.01 = 11,295.55/x
  3. Step 3: Cross multiply
    20,726.38x = 28,603.01 × 11,295.55
  4. Step 4: Simplify right side
    20,726.38x = 323,086,530.11
  5. Step 5: Solve for x
    x = 323,086,530.11/20,726.38
  6. Step 6: Final answer
    x = 15,588.18

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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.