Home / 20,496.19-28,279.73-13,676.80

Finding the Fourth Proportional to 20,496.19, 28,279.73 and 13,676.80

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Solution

The fourth proportional to 20,496.19, 28,279.73 and 13,676.80 is: 18,870.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,496.19 : 28,279.73 = 13,676.80 : x
  2. Step 2: Convert to fraction form
    20,496.19/28,279.73 = 13,676.80/x
  3. Step 3: Cross multiply
    20,496.19x = 28,279.73 × 13,676.80
  4. Step 4: Simplify right side
    20,496.19x = 386,776,211.26
  5. Step 5: Solve for x
    x = 386,776,211.26/20,496.19
  6. Step 6: Final answer
    x = 18,870.64

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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.