Home / 20,619.14-28,477.60-13,893

Finding the Fourth Proportional to 20,619.14, 28,477.60 and 13,893

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Solution

The fourth proportional to 20,619.14, 28,477.60 and 13,893 is: 19,187.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,619.14 : 28,477.60 = 13,893 : x
  2. Step 2: Convert to fraction form
    20,619.14/28,477.60 = 13,893/x
  3. Step 3: Cross multiply
    20,619.14x = 28,477.60 × 13,893
  4. Step 4: Simplify right side
    20,619.14x = 395,639,296.80
  5. Step 5: Solve for x
    x = 395,639,296.80/20,619.14
  6. Step 6: Final answer
    x = 19,187.96

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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.