Home / 28,194.39-42,174.71-21,480.09

Finding the Fourth Proportional to 28,194.39, 42,174.71 and 21,480.09

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Solution

The fourth proportional to 28,194.39, 42,174.71 and 21,480.09 is: 32,131.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,194.39 : 42,174.71 = 21,480.09 : x
  2. Step 2: Convert to fraction form
    28,194.39/42,174.71 = 21,480.09/x
  3. Step 3: Cross multiply
    28,194.39x = 42,174.71 × 21,480.09
  4. Step 4: Simplify right side
    28,194.39x = 905,916,248.25
  5. Step 5: Solve for x
    x = 905,916,248.25/28,194.39
  6. Step 6: Final answer
    x = 32,131.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.