Home / 20,827.36-28,741.71-11,395.90

Finding the Fourth Proportional to 20,827.36, 28,741.71 and 11,395.90

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Solution

The fourth proportional to 20,827.36, 28,741.71 and 11,395.90 is: 15,726.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.36 : 28,741.71 = 11,395.90 : x
  2. Step 2: Convert to fraction form
    20,827.36/28,741.71 = 11,395.90/x
  3. Step 3: Cross multiply
    20,827.36x = 28,741.71 × 11,395.90
  4. Step 4: Simplify right side
    20,827.36x = 327,537,652.99
  5. Step 5: Solve for x
    x = 327,537,652.99/20,827.36
  6. Step 6: Final answer
    x = 15,726.32

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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.