Home / 20,649.32-28,495.10-11,696.90

Finding the Fourth Proportional to 20,649.32, 28,495.10 and 11,696.90

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Solution

The fourth proportional to 20,649.32, 28,495.10 and 11,696.90 is: 16,141.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.32 : 28,495.10 = 11,696.90 : x
  2. Step 2: Convert to fraction form
    20,649.32/28,495.10 = 11,696.90/x
  3. Step 3: Cross multiply
    20,649.32x = 28,495.10 × 11,696.90
  4. Step 4: Simplify right side
    20,649.32x = 333,304,335.19
  5. Step 5: Solve for x
    x = 333,304,335.19/20,649.32
  6. Step 6: Final answer
    x = 16,141.18

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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.