Home / 20,827.63-28,742.12-11,396.19

Finding the Fourth Proportional to 20,827.63, 28,742.12 and 11,396.19

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Solution

The fourth proportional to 20,827.63, 28,742.12 and 11,396.19 is: 15,726.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.63 : 28,742.12 = 11,396.19 : x
  2. Step 2: Convert to fraction form
    20,827.63/28,742.12 = 11,396.19/x
  3. Step 3: Cross multiply
    20,827.63x = 28,742.12 × 11,396.19
  4. Step 4: Simplify right side
    20,827.63x = 327,550,617.16
  5. Step 5: Solve for x
    x = 327,550,617.16/20,827.63
  6. Step 6: Final answer
    x = 15,726.74

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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.